Answer:
B. DNA
DNA → RNA → protein.
the rate of cell division(how often cells divide)?
A is the same for all cells
B is different depending on the type of cell and /or the conditions the cells is in.
C is different depending on the type of cell
D is the same for most cells except for sperm and egg cells.
Answer:
i dont know
Explanation:
The kernel color in wheat is a continuous trait determined by two additive genes, each with two alleles, that equally contribute to kernel color determination. The red kernels are determined by two genes and two dominant alleles (R1R1R2R2), and white kernels are determined by two recessive alleles at the same two genes (r1r1r2r2). The duplicate dominant alleles R1 and R2 contribute equally to kernel color and cumulatively control the intensity of the red kernel phenotype. Both these alleles are dominant over the recessive white alleles r1 and r2.
1. A true breeding red plant and true breeding white plant are crossed, and the resulting F1 progeny are selfed. What is the expected phenotypic ratio of the kernel progeny of the F2 offspring?
a. 1:46:4:1.
b. 3:1
c. 9:3:3:1.
d. 27:9:9:9:3:3:3.
2. Determine which statement best describes the relationship between the phenotypes of the R1R1 R2r2 and R1r1 R2R2 genotypes.
A. The phenotype of the R1R1 R2r2 will be darker than the phenotype of R1r1 R2R2 because the alleles R1R1 R2r2 Rn have a stronger additive effect than those in R1r1 R2R2.
B. There is no way to predict the expected phenotype color from the genotypes because the trait is continuous and indiscrete.
C. The phenotypes of the R1R1 R2r2 and R1r1 R2R2 genotypes will be the same because the same number of dominant and recessive alleles are contributing in each genotype.
D. The genotype of the R1R1 R2r2 will be lighter than the phenotype of R1r1 R2R2 because the alleles R1R1 R2r2 have a stronger additive effect than those in R1r1 R2R2.
Answer:
1) Phenotypic ratio= 9:3:3:1
2) The correct statement is C. The phenotypes of the R1R1 R2r2 and R1r1 R2R2 genotypes will be the same because the same number of dominant and recessive alleles are contributing to each genotype.
Explanation:
Available data:
kernel color in wheat is a continuous trait determined by two additive genesBoth genes equally contribute to kernel color determinationRed kernels are determined by two genes and two dominant alleles (R1R1R2R2)White kernels are determined by two recessive alleles at the same two genes (r1r1r2r2)Dominant alleles R1 and R2 contribute equally to kernel color and cumulatively control the intensity of the red kernel phenotypeR1 and R2 are dominant over r1 and r21)
1st cross: A true-breeding red plant with true-breeding white plant
Parentals) R1R1R2R2 x r1r1r2r2
F1) 100% of the progeny will be R1r1 R2r2
2nd cross: Between two dihybrids
Parentals) R1r1R2r2 x R1r1R2r2
Phenotype) Red Red
Gametes) R1R2, R1r2, r1R2, r1r2
R1R2, R1r2, r1R2, r1r2
By using the forked-line method:
1/4 R1R1 x 1/4 R2R2 = 1/16 R1R1 R2R21/4 R1R1 x 2/4 R2r2 = 2/16 R1R1 R2r21/4 R1R1 x 1/4 r2r2 = 1/16 R1R1 r2r22/4 R1r1 x 1/4 R2R2 = 2/16 R1r1 R2R22/4 R1r1 x 2/4 R2r2 = 4/16 R1r1 R2r22/4 R1r1 x 1/4 r2r2 = 2/16 R1r1 r2r21/4 r1r1 x 1/4 R2R2 = 1/16 r1r1 R2R21/4 r1r1 x 2/4 R2r2 = 2/16 r1r1 R2r21/4 r1r1 x 1/4 r2r2 = 1/16 r1r1 r2r2F2)
9/16 R1 - R2-, red phenotype3/16 R1- r2r23/16 r1r1 R2-1/16 r1r1 r2r2, White phenotypeNote: The "-" symbol represents either a dominant or a recessive allele.
Phenotypic ratio: 9:3:3:1
2)
We know that both dominant alleles R1 and R2 contribute equally to kernel color and cumulatively control the intensity of the red kernel phenotype.
Genotypes R1R1 R2r2 and R1r1 R2R2 are carrying the same amount of dominant alleles, all of them are contributing equally to the phenotype, meaning that the cumulative effect is the same in both cases.
If we compare, for instance, R1R1 R2r2 and R1R1 r2r2, we can assume that the first genotype is darker than the second one, because it has 3 dominant alleles ( R1, R1, R2), while the second one only has 2 dominant alleles ( R1, R1).
Dominant alleles contribute equally, but they have cumulative effects, so the more dominant alleles the are in a genotype, the darker is the kernel color.
C. The phenotypes of the R1R1 R2r2 and R1r1 R2R2 genotypes will be the same because the same number of dominant and recessive alleles are contributing to each genotype.
Using PCR to type DNA requires a much bigger sample that one used for RFLP.
True
False
Normally, arteries are depicted in red and veins are depicted in blue. The pulmonary arteries are colored ______________________________ because they contain ______________________________ blood that flows to the lungs to pick up ______________________________ and unload ______________________________. The pulmonary arteries exit the heart from the ______________________________ (chamber). The pulmonary veins are colored ______________________________ because they carry freshly ______________________________ blood back to the ______________________________ (chamber) of the heart.
Answer:Normally, arteries are depicted in red and veins are depicted in blue. The pulmonary arteries are colored BLUE because they contain DEOXYGENATED blood that flows to the lungs to pick up OXYGEN and unload CARBONDIOXIDE. The pulmonary arteries exit the heart from the RIGHT VENTRICLE (chamber). The pulmonary veins are colored RED because they carry freshly OXYGENATED blood back to the LEFT ATRIUM (chamber) of the heart.
Explanation:
The circulatory system ensures a continuous flow of blood to all body cells. The heart is a muscular organ that is divided into four chambers which includes the right atrium, left atrium, right ventricle and the left ventricle.
The heart pumps blood into vessels that vary in structure, size and function and there are several types which includes:
--> arteries
--> arterioles
--> capillaries,
--> venules and veins.
The ARTERIES are the blood vessels that transport blood away from the heart. They are normally depicted in red because they carry oxygenated blood with the exception of the PULMONARY ARTERY which carries deoxygenated blood to the lungs.
The VEINS are blood vessels that return blood to the heart. They are normally depicted in blue with the exception of the PULMONARY VEIN because they carry deoxygenated blood from the lungs to the heart.
Within the cell we find organelles with specialized functions. Identify the correct organelles from options below
Answer:
List of Cell Organelles and their Functions
Plasma Membrane
Cytoplasm
Nucleus
Endoplasmic Reticulum
Mitochondria
Plastids
Ribosomes
Golgi Apparatus
Microbodies
Cytoskeleton
Cilia and Flagella
Centrosome and Centrioles
Vacuoles
Explanation:
3. All of the following are true of fresh vegetables EXCEPT
they spoil quickly.
they are very nutritious.
they are cheapest when in season.
they keep as long as canned vegetables.
they are vert nutritious
What structure is found only in eucaryotic cells
Answer:
only eucaryotic have a nucleus and membrane-bound structures called organelles.
Explanation:
This inner planet takes 365 days to orbit the sun
Answer:
Earth is the inner planet that takes 365 days to orbit the sun.
Explanation:
Which of the following describes the effect of global climate change on biodiversity: Rising ocean water temperatures have increased the populations of krill and Antarctic silverfish thus increasing Adelie penguin populations for whom these are food sources. Warm temperatures and more frequent dry periods have stressed frog species such as the coqui making them more vulnerable to a lethal fungal infection thus reducing their populations. The warming of ocean waters in conjunction with increased carbon dioxide dissolving into ocean has resulted in boon for coral reefs which are thriving. Mountain ecosystems are not too vulnerable to global climate change because only very hardy species live at high altitude.
Answer:
Warm temperatures and more frequent dry periods have stressed frog species such as the coqui making them more vulnerable to a lethal fungal infection thus reducing their populations.
Explanation:
Rise in temperature, flooding as well as drought affect biodiversity. As climate changes, there is usually an alteration of temperature as well as weather patterns, the impact is felt by
plant and animal life. According to
Scientists, there is an expectation that
number and range of species, which are regarded as biodiversity will experience declination with greatly increase in temperatures
name the three major parts of a cell and their functions
Answer:
cell membrane cytoplasm nucleus
Explanation:
cell membrane controls what goes inside and out the cell
cytoplasm is where chemical reactions happen
nucleus contains genetic information and controls what happens inside the cell
Write extensively the 3 main constituent of DNA
Answer:
A single nucleotide is made up of three components: a nitrogen-containing base, a five-carbon sugar, and a phosphate group. The nitrogenous base is either a purine or a pyrimidine. The five-carbon sugar is either a ribose (in RNA) or a deoxyribose (in DNA) molecule.
Explanation:
QUESTION 1
Gymnosperms are classified into which of th following phyla?
O Anthophyta
Hepatophyta, Bryophyta, and Anthocerophyta
Lycophyta and Monilophyta)
Coniferophyta, Cycadophyta, and Gingkophyta
QUESTION 2
Answer:
Coniferophyta, Cycadophyta, Gingkophyta and Gnetophyta
Explanation:
Gymnosperms consist of four main phyla: the Coniferophyta, Cycadophyta, Gingkophyta and Gnetophyta. Conifers are the dominant plant of the gymnosperms, having needle-like leaves and living in areas where the weather is cold and dry.
URGENT PLZ ANSWER
Natural selection would be possible in a population of clones (all organisms are genetically identical).
A) True
B) False
see the screenshot and answer the question
where is the most energy stored in the ATP molecule stored
Which refers to the vascular tissue that carries water and nutrients from the roots up the plant?
Answer:
nothing
Explanation:anyways the x value is on your teachers but
According to cell theory, all new
cells...
A. must share DNA with existing cells.
B. must eat.
C. come from other cells.
Answer:
C. come from other cells.
Explanation:
The artery that will eventually subdivide to form the posterior cerebral arteries is the _____ artery.a) basilarb) external carotidc) maxillaryd) superficial temporale) nternal carotid
Answer:
a) basilar
Explanation:
The basilar artery is an artery whose function is to supply of blood to the brain and central nervous system, thereby transporting oxygenated blood to the brainstem, cerebellum, and occipital lobes for maintaining normal brain function. This artery is 3 to 4 mm in diameter. The basilar artery is formed from the confluence of two vertebral arteries inside the cranium at the level of the medulla. The posterior cerebral arteries are formed by the bifurcation of the basilar artery, and they supply oxygenated blood to the occipital lobes and posteromedial temporal lobes.
please help me asap!
Answer:
3,4,5
Explanation:
let me know if that helps
6. When an action potential reaches an axon's terminal it will
a. Trigger the release of neurotransmitters into the cleft
b. Cause voltage gated ion channels to open on the postsynaptic cell
c. Cause ligand-gated ion channels to open on the presynaptic neuron
Answer:
Cause voltage gated ion channels to open on the postsynaptic cell
Explanation:
Brainliest
Our Sun will eventually become which of the following?"
Brown Dwarf star
Red Giant star
Red Super Giant star
Blue Giant star
Answer:
Red Giant
Explanation:
trust me bro
Which graphic organizer is commonly used to compare and contrast ideas?
Venn diagram
mind map
word web
problem-solution chart
Answer:
Venn diagram
Explanation:
The Venn diagram is a graphical organizer which is commonly used to compare and contrast ideas.
The Venn diagram is represented by several number of circle that represents different areas in order to compare one area to another. If the circles are overlapping it shows commonality or similarity between those both areas are. The Venn diagram makes easy to understand the difference or similarity between two areas.
Hence, the correct answer is "Venn diagram".
Answer:
A- Venn diagram
Explanation:
Edge22' <3
The following is an example of a renewable source of energy:
A.
petroleum
B.
geothermal energy
C.
nuclear energy
D.
coal
What happens if the cells in clean meat are not balanced (will give Brainlyest)
Why does milk have to be kept in refrigerator? Choices:
1-The reactions that cause milk to spoil are slower at lower temps
2- Physical changes that cause milk to spoil are slower at lower temps
3- no chemical or physical changes can occur at lower temps
What might happen to the magma convection currents if there were no radiogenic heat produced in the core?
How would this affect life on Earth?
Plz help me
Answer:
If there were no radiogenic heat produced in the core, there would be no convection currents, and life on the Earth would not be possible.
Explanation:
The convection currents are the result of heating by temperature gradients. Differences in temperature and density produce these currents. Warm materials are lighter and can ascend, while cold materials are heavier and denser, so they tend to descend. These materials movements create a circular motion pattern known as convective currents. They occur in the atmosphere, in the water, and the Earth mantle. In the last case, while the hot material emerges from the bottom areas, the cold mantle sinks, creating a circular convection current. These play a significant role in fluids circulation and might be responsible for the movements of the lithospheric plates that are over the mantle. The temperature on the surface is much inferior that the mantle´s temperature, so the lithospheric pieces sink, creating a descendent current. Near the terrestrial core, the heat might reach up to 3,500ºC, and solid materials in these areas melt and fuse. When fusing, materials lose density, becoming lighter and ascending again to the surface, creating the ascending currents. The currents of ascending materials are known as thermal feathers or plumes.
Hot ascending material keeps the surface warm, making life possible. Also, radiogenic heat produced in the core is responsible for the electromagnetic field.
The electromagnetic field protects the Earth from many particles that come forward to the surface from space, specifically from the sun. The electromagnetic field also influences the atmosphere, keeping it in its place, necessary for life on Earth.
The plate´s movement produces earthquakes and volcanic activity. Both of them also necessary for many reasons, such as keeping fertile soils and producing necessary atmospheric gasses.
Through the years, the core losses heat, and eventually, it will become solid. When this happens, convective currents will stop because there will be no heat from the bottom to make them move. The electromagnetic field will disappear, and the atmosphere will be affected as well. The Earth surface will become cold. Mantle movement will stop, and there will be no earthquakes nor volcanic activities. Every living being on Earth will be affected by this fact. Life on Earth will not be possible.
Where do plants access the nutrients they need?
WARNING: This answer is NOT technical! ⚠
Plants can get their nutrients from the ground and dirt. But they grow using the carbon around them (Like the carbon dixiode we breathe out).
explain why excessive bleeding can lead to death
Answer:
If blood flow is cut off for more than a few minutes, the cells in your brain start to die. This impairs the parts of the body that the brain cells control. A stroke can cause lasting brain damage, long-term disability, paralysis (an inability to move), or death.
Explanation:
die from having lost too much blood The man almost bled to death.
After death the blood generally clots slowly and remains clotted for several days. In some cases, however, fibrin and fibrinogen disappears from blood in a comparatively short time and the blood is found to be fluid and incoagulable soon after death.
Excessive Bleeding Means Loosing Blood.
This Means Your Body’s Organs Are Unable To Receive The Blood They Need In Order To Survive. If You Loose Too Much Blood, You Will Perish.
All cells come from existing cells. On top of that, they all have a cell membrane surrounding the _____ and most plants and bacterium have a cell wall.
Whats the missing word?
A. DNA
B. Cytoplasm
C. Mitochondrion
Answer:
b
Explanation:
cytoplasm
hope this helps and is right :)
All cells have a cell membrane surrounding their cytoplasms.
What are cell membranes?They are organelles of cells that surrounds the cytoplasm.
They delimit cells and act as a selectively permeable membrane that allows the passage of some materials in and out of the cell and limits the passage of others.
Cell membrane composition varies depending on the type of cell.
More on cell membranes can be found here: https://brainly.com/question/13524386
#SPJ2
Plz help me I a, timed
Answer:
Your answer is A) precipitation.
