Punnett squares are used to get the genotypic and phenotypic frequencies among the progeny produced from a cross. Punnett squares and answers below.
What is a punnett square?The Punnett square is a graphic representation that shows the different types of gamete combinations according to the alleles involved in a cross.
Punnett square shows the probabilities of getting offspring with different genotypes and their consequent phenotypes.
In the exposed example,
Diallelic genes that codes for colorY = yellow ⇒ dominant alleley = blue ⇒ recessive alleleWe will assume complete dominance, meaning that with at least one dominant allele in the genotype, the expressed color is yellow.
1)
a- Cross 1
Parentals) YY x Yy
Gametes) Y Y Y y
Punnett square) Y Y
Y YY YY
y Yy Yy
F1) Genotype
1/2 = 50% of the progeny is expected to be homozygous dominant, YY
1/2 = 50% of the progeny is expected to be heterozygous, Yy
Phenotype
100% of the progeny is expected to be yellow.
b- Cross 2
Parentals) YY x yy
Gametes) Y Y y y
Punnett square) Y Y
y Yy Yy
y Yy Yy
F1) Genotype
100% of the progeny is expected to be heterozygous, Yy
Phenotype
100% of the progeny is expected to be yellow.
2)
a. What are the resulting phenotypes? Only yellow kernels
b. Are there any blue kernels? No
c. How can you tell whether or not there are blue kernels?
Blue is the recessive phenotype for kernels. Assuming complete dominance, since all genotypes are expected to carry at least one dominant allele, all the F1 kernels are yellow.
3) Let us cross two heterozygous individuals from the F1
Parentals) Yy x Yy
Gametes) Y y Y y
Punnett square) Y y
Y YY Yy
y Yy yy
F1) Genotype
1/4 = 25% of the progeny is expected to be homozygous dominant, YY
1/2 = 50% of the progeny is expected to be heterozygous, Yy
1/4 = 25% of the progeny is expected to be homozygous recessive, yy
Phenotype
75% of the progeny is expected to be yellow.
25% of the progeny is expected to be blue.
4)
a. What are the genotypes of the F2 generation?
- 25% YY (homozygous dominant)
- 50% Yy (Heterozygous)
- 25% yy (Homozygous recessive)
b. What are their phenotypes?
- 75% yellow kernels
- 25% blue kernels
c. Are there more or fewer blue kernels than in the F1 generation?
More. Blue kernels appeared in the F2.
5. Assuming independent genes, the , are as follows
Gametes
a. YY Ss ⇒ YS, YS, Ys, Ys
b. Yy Ss ⇒ YS, Ys, yS, ys
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Kathy Morningside is a 55-year-old woman who has had spells of gastroin- testinal problems over the years (dyspepsia), but a formal diagnosis has never been conclusive. During the past four months, she has had a history of vomiting after some meals and she has lost about 5 kg over this time. Mrs Morningside, together with an old school chum, went to London for a weekend theatre break to see Les Miserables. On the Friday evening, she began to feel unwell, but put it down to her fear of flying. They went to the theatre on the Saturday evening and followed this with a light opera supper at a nearby restaurant. Mrs Morningside suffered a haematemesis and was rushed to hospital with massive bleeding. Her condition settled and follow- ing overnight rehydration, she returned to her home in Newcastle where she was examined by a gastrointestinal consultant. The consultant noted that Mrs Morningside was pale and tachycardic. Her blood pressure was 130/90 mmHg. Rectal examination revealed frank melaena. He attributed the bleed to chronic peptic ulceration, probably as a consequence of long-term use of non-specific anti-inflammatory drugs. He considers her to be at high risk of re-bleeding and may contemplate partial gastrectomy when her nutritional intake has improved. The consultant refers Mrs Morningside to the dietitian as he is concerned about her overall nutritional status. She is currently anaemic (frank iron and possibly megaloblastic/pernicious anaemia). (1) Explain the approaches that may be taken to assess this patient's nutri- tional and dietary status. (2) Consider the dietary assessment more carefully. What may be the prin- cipal focus of the interview with the client? What advance preparation might assist you in the conduct of the assessment interview?
In order to assess the nutritional status of the patient, the nurse needs to understand the anthropometric measurements of the patient by:
The physical examination helps to understand the physical appearance of the patient and to find out the BMI.Monitoring the intake and output chart helps to understand the nutritional status of the patient.Monitoring the weight helps to understand the accurate weight loss of the patient.How to depict the information?The patient is having chronic peptic ulceration so, the focus of the dieticians during the interview must be the collection of history about the previous intake of the anti-inflammatory medications.
In order to confirm it, the dietician needs to ask the patient about the past medical condition and treatments.
As an advance preparation, the dieticians need to study the case sheets of the patient to get an idea about the patient prior to the interview session.
The principal focus of the interview with the client will be the food that the client normally eats and previous treatment regarding the illness.
The advance preparation that might assist in the conduct of the assessment interview is to read extensively on the disease in order to have more information about it.
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does this picture on the foot look like it might be gangrene?
maybe but it could also be planter psoriasis.
but for gangrene, the surface of your skin may look normal at first. As the condition worsens, the skin may become pale and then turn other colours such as grey or purplish red. The skin may look bubbly.
Which hormone allows a woman to produce milk after she gives birth?
1Thyroid-stimulating hormone
2Follicle-stimulating hormone
3Luteinizing hormone
4Prolactin
Prolactin hormone allows a woman to produce milk after she gives birth. Thus, the correct option is D.
What is lactation?Lactation is the process of producing and releasing milk from the mammary glands in breasts. Lactation begins in pregnancy when hormonal changes signal the mammary glands to make milk in preparation for the birth of baby.
It’s also possible to induce lactation without a pregnancy using the same hormones that your body makes during pregnancy. Lactation ends once your body stops producing milk.
Milk ducts increase in size and number when levels of estrogen and progesterone rise. The result is a fuller breast. The mammary glands start to get ready to produce milk.
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When does crossing over occur?
A. Before Meiosis
B. Meiosis 2
C. Meiosis 1
D. After Meiosis
Answer:
C. Meiosis 1
Explanation:
Because then there are double chromosomes this stage only duplicates in diploid cells.
Meiosis 2 duplicate cells in to haploid cells (only gametes)
What term is used for species that are at serious risk of extinction?
Answer:
Endangered species
What does a Diploid refer to?
a
A cell with half the number of chromosomes as the body cells.
b
A cell with the total number of chromosomes in the body cells.
c
A gene that is fully expressed when two different alleles are present.
d
A picture representation for predicting what offspring will look like.
Answer:
I think its a or d
witchh component is released from the active site of an enzyme during a chemical reaction
Options:
A. reactant
B. product
C. substrate
D. protein
Answer:
The catalyzation of a chemical reaction is greatly aided by the enzyme.
What are enzymes?Proteins called enzymes aid in accelerating our bodies' chemical reactions, or metabolism. Some compounds are created, while others are broken down. Enzymes are a component of all life. Enzymes are created by our bodies spontaneously.
The structure of the enzyme has an active site where a substrate can bind. The substrate of a complimentary form can approach and bind to the active site because it has a certain shape. Once the substrate is attached to the enzyme's active site, the reaction begins, and a product is created. At the conclusion of the process, the product is generated, released from the active site, and the enzyme is unaltered.
The product that is released from the active site is the appropriate response.
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Rich has been a therapist for over fifteen years and most of that time he has used an assessment tool that uses random pictures to provoke an immediate response. Rich is looking to determine anxiety and depression in individuals, so he utilized the ________ for assessment.
Answer:
Rorschach Inkblot Test
Explanation:
yes
Rich is looking to determine anxiety and depression in individuals, so he utilized the Rorschach Inkblot Test for assessment.
What is Rorschach Inkblot Test?Rorschach Inkblot Test may be defined as a type of test that utilizes some sort of images in inkblots in which some of them are black or gray and demonstrate the pattern of thought disorders like anxiety, depression, etc. in the case of schizophrenia.
This test is also utilized to estimate the personality of an individual, emotional disorders, and level of intelligence.
Therefore, it is well described above.
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Question 7 of 25 Which of the following best describes a community?
A. An interacting group of populations that occupy the same area
B. Alhof the individuals of the same species that inhabit an area
(.)
C. A group of organisms that interact with nonliving parts of the
environment
D. A group of organisms that interbreed and have common
characteristics
Answer:
A - An interacting group of populations that occupy the same area.
WILL GIVE BRAINLIEST AND THANKS
A germ-line cell containing the chromosomes below undergoes meiosis to produce an egg. What genotype might be present in the egg? Assume no crossing over or nondisjunction. Note: There
are 4 chromosomes shown here.
AG
AGb
AgB
AGBb
AaGgBb
G
b
→
ICH &
6
Answer:
AG or B
Explanation:
i didnt understand what ich mean
but the explanation is that it must have two chromosomes before meiosis so will undergo meiosis to give one set either B or AG
state the name for chemicals that are secreted by glands into the blood and that affect organs elsewhere in the body
The name of chemicals that are secreted by glands into the blood and those that affect organs elsewhere in the body are known as Hormones.
What is Gland?A Gland may be defined as an organ in the human or animal body that perspires certain chemical substances for usefulness in the body or for liberation into the surroundings.
The endocrine glands are responsible for the synthesis of such chemical substances into specific body parts and organs and pass them directly into the bloodstream. These chemical messengers are thought to be the agents of communication between one body part and another.
Therefore, it is well described above.
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Which organisms ) contain this membrane bound organelle ?
Answer:
eukaryotic organisms contain this membrane bound organelles.
I need help with this question please
The presence of a tumor in the larynx is known as Laryngeal cancer. It may affect the process of breathing, speaking, and swallowing of the food down to the esophagus.
What are the properties of a cancerous cell?Cancerous cells have numerous properties. Some of them are as follows:
It is an undifferentiated cell that continues uncontrolled rapid division and proliferation. It is immortal which means allows the inhibition of apoptosis. It follows the process of metastasis.Laryngeal cancer disturbs the passage of air in and out of the lungs through the larynx and trachea. The process of migration of cancerous cells from the initial origin to the other connections may describe as metastasis.
Laryngeal cancer is caused primarily by smoking, drinking alcohol, and other age-related issues. The symptoms of this cancer may include voice changes, sore throat, or a cough that resides long away.
Therefore, it is well described above.
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Which expression is equivalent to the given expression?
Which statement is a hypothesis?
Jada decides to investigate the effectiveness of hand sanitizers compared to soap. She says that hand sanitizers are as effective as soap in destroying bacteria. Many sanitizers have alcohol as their main component. She performs a study in which people use sanitizers for one week and then soap for another week. She then examines the bacterial count.
Answer:
When on the basis of certain facts about the object or subject we provide an explanation which is not proved is known as hypothesis.
For example, Jada says that hand sanitizers are as effective as soap in destroying bacteria.
Since, it is not proved by her and this statement shows just an explanation which is not experimentally found.
Thus, we can conclude that the statement hand sanitizers are as effective as soap in destroying bacteria, is a hypothesis.
Which statement would least likely be used to describe variation?
O Variations are inherited différences between individuals of the same species.
O Variations that decrease reproductive success are more likely to be passed on.
O Variations may result in changes to an entire population after many generations.
O Variations provide some individuals with an advantage.
Answer:
"Variations that decrease reproductive success are more likely to be passed on" is the one statement among the choices given in the question that would least likely be used to describe variation. I hope the it helps you.
There are more hydrogen atoms in living organisms than any other atom, but oxygen is more abundant in terms of mass.
Hydrogen is more in number but less than mass from oxygen because of its lower mass.
Why oxygen is more than hydrogen in term of mass?There are more hydrogen atoms in living organisms than any other atom, but oxygen is more abundant in terms of mass because the Hydrogen atoms have a lower mass than oxygen atoms so in terms of mass, oxygen is ahead of hydrogen atom.
So we can conclude that hydrogen is more in number but less than mass from oxygen because of its lower mass.
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Why electron microscope cannot be used to study life processe?
Answer and Explanation:
Electron microscopes are the most powerful types of microscopes, capable of distinguishing even individual atoms. However, these microscopes can't be used to image living cells because the electrons destroy the samples.
Forensic scientists can match missing persons and their families by matching maternal DNA to the missing individual.
Which type of DNA technology is used for this purpose?
Answer:
The mitochondrial DNA (mtDNA) is passed down from the mother to the children almost unchanged. The analysis of mtDNA has provided the forensic scientist with essential tools for determining the source of DNA that they have recovered even from small biological samples. Thus, the answer to the question above is letter B.
Explanation:
With the development of air flight and mass transit, humans are able to move very rapidly around the world.
Which of the following is a possible consequence of increased human travel?
Choose 1 answer:
Explanation:
human are able to move very rapidly around the world because of good atmosphere if there is more powerful population
Answer: CORRECT (SELECTED)
Exotic species are introduced to new areas where they compete with native species.
Explanation:
Introduced, exotic species can outcompete native species and alter the biodiversity in that area.
If you have 100 apples and you take 30 how many do you have?
Answer:
100 is the answer.........
Question: What do all organisms
have in common?
Answer:
All living things have certain traits in common: Cellular organization, the ability to reproduce, growth & development, energy use, homeostasis, response to their environment, and the ability to adapt. Living things will exhibit all of these traits.
Name 3 specific resources that are overexploited in anne arundel county?
3 specific resources that are overexploited in Anne Arundel County, marine resources, nature exploration and fishing.
What is Anne Arundel County known for?With over 500 miles of coastline, Anne Arundel County is known for
boatingfishingcrabbingwater skiingsailing and swimming.For nature lovers, there are two state parks, more than 120 municipal parks and several nature reserves.
With this information, we can conclude that 3 specific resources that are overexploited in Anne Arundel County, marine resources, nature exploration and fishing.
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the diagram below represents two cells, x and y which statement is correct concerning the structure labeled A ?
The diagram below (attached image) represents two cells, X and Y.
Which statement is correct concerning the structure labeled A?
A) It is involved in cell communication in cell X but not in cell y.
B) It represents a cell wall in cell X and the cell membrane in cell y.
C) It prevents the absorption of CO2 in cell x and O2 and cell y.
D) It aids in the removal of metabolic waste in both cell X and Y
Cell membrane accomplishes several functions, among them, the removal of cell wastes. Option D. It aids in the removal of metabolic waste in both cell X and Y.
What is the cell membrane?
The cell membrane is a barrier that surrounds the cell content and isolates it from the extracellular space. It is composed of two lipidic layers, proteins, and glucans incrusted in between.
The cell membrane accomplishes many different functions. Among them, we can mention,
Isolation ⇒ It separates the intracellular content from the extracellular space.Protection ⇒ It protects the interior of the cell from any damaging external factor that might affect its correct functioning.Transport ⇒ It allows the selective pass of certain molecules or ions.Substances interchange
⇒ Passive transport → Simple diffusion → through lipids
→ Facilitated diffusion → Assisted by channel
proteins
→ Does not need energy
→ Depends on the molecule size, the concentration
at each side of the membrane, and the charge of
the ions.
→ Occurs in favor of the electrochemical gradient
⇒ Active transport → It does the energy to occur
→ Mediated by carrier proteins
→ Transport big-sized molecules
→ Against the electrochemical gradient
⇒ Endocytosis/Exocytosis → Active transport mediated by vesicles.
Communication ⇒ By emission and reception of substances and molecules, the cell can communicate with other cells. This process is always mediated by membranes and their transport proteins or receptor proteins.
In the exposed example X cell represents an animal cell, and Y cell is a plant cell.
Both the animal and plant cells are eukaryotic. They carry their genetic material in the nucleus and mitochondria. Organelles are located in the cytosol, and both of them are surrounded by a protector cell membrane.
Among the options, the correct one is D. It aids in the removal of metabolic waste in both cell X and Y
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What are nucleosome remodelling complexes and describe their function (s).
Answer:
Explanation:
Chromosomal DNA is packaged inside microscopic nuclei with the help of histones. These are positively-charged proteins that strongly adhere to negatively-charged DNA and form complexes called nucleosomes. ... Nucleosomes fold up to form a 30-nanometer chromatin fiber, which forms loops averaging 300 nanometers in length.
What is the impact on human health as we try to stay ahead of the evolutionary process?
(Hint: Consider diagnoses of new illnesses, research and development of medicines, and biological factors like antibiotic resistance).
Staying ahead of human evolution has provided more harm than good impact on human health. According to an evolutionary perspective, several genetic variations interact with surroundings and other genes during development to affect the phenotypes of diseases.
Evolution is a set of intricate mechanisms through which populations of organisms change over time and is regarded by scientists as the fundamental, unifying notion of biology. Genetic adaptations brought about by evolution enable organisms to endure, remain healthy, and flourish.]Often sparked by war and natural disasters, public health evolved via trial and error and the expansion of scientific medical knowledge. Specifically, urbanization and social changes, as well as other aspects of the growth of community life, increased the demand for organized health protectionHence , The process of evolution has significantly impacted human health. Comparing our new environment to the ones we developed from aids in understanding
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In a species with 5 pairs of chromosomes, how many combinations of chromosomes in the gametes are possible?
In a species with 5 pairs of chromosomes, how many combinations of chromosomes in the gametes are possible?
Answer: 32
Explanation:
So the number of chromosomes combination chromosome combinations in the gametes that are possible is Through to the part of five or 32. So this is the right answer
Explain why there are fewer organisms at higher trophic levels.
Answer:
As we move to higher Trophic levels, we will, generally speaking, see larger animals. And yet, moving to higher trophic levels, these larger animals need to live on smaller energy production from the next trophic level down. As a result, there will usually be fewer animals at higher trophic levels.
Explanation:
How are the processes of asexual reproduction and sexual reproduction different? Select three options
O In both processes, all offspring have identical DNA.
0 They involve a different number of parents.
O Only one process involves sperm and eggs.
U Only one process involves meiosis.
D Only one process involves cell division.
Answer:
0 They involve a different number of parents.
O Only one process involves sperm and eggs.
0 Only one process involves meiosis.
Explanation:
I’m 99% sure these are correct. I hope this helps! Have a great day :)
You are interviewing Fatoumatta about her health and nutrition to support her in her exploration of health. Explain the differences between subjective data and objective data you might collect in a nutrition assessment.
Subjective data is obtained from interviewing a client while objective data is obtained through physical examination.
What are subjective and objective data in nutritional assessment?Subjective data is data which is obtained from the client interview.
It data about food habits and customs, meal patterns, food beliefs, and medical conditions affecting nutritional status.
Objective data is data that is obtained during a physical examination of the client such body weight, muscle mass, blood tests.
Therefore, subjective data is obtained from interviewing a client while objective data is obtained through physical examination.
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which statement of osmosis is correct?
Answer:
The process in which the water molecule moves from a region of higher solvent concentration to the region of lower solvent concentration.
The energy which drives this process is called osmotic pressure.
