Answers
Answer:
Mandel had performed simple experiments by using pea plants having definite traits of opposite expression as Tall or Dwarf, Round seed
Explanation:
Related Questions
According to the Janzen-Connell hypothesis, in order for pathogens or herbivores to contribute to the maintenance of diversity: Select all that apply. the pathogens/herbivores must be host-specific. mortality of seedlings due to competition between plants must be less important than mortality due to herbivores/pathogens. the infections must be avirulent. the pathogens/herbivores must result in lower seedling mortality close to adult plants of the same species.
Answers
Answer:
The correct answer is -
The pathogens/herbivores must be host-specific.
Mortality of seedlings due to competition between plants must be less important than mortality due to herbivores/pathogens.
Explanation:
According to the Janzen-Connell hypothesis, it is showed by research that seeds of rare species are more likely to escape seed from herbivores/pathogens. According to this theory, pathogens should be able to infect only a specific species.
Competition is less important in terms of mortality of seeds than it is due to the predators such as herbivores/pathogens of a species according to this hypothesis.
What do you think might happen if during anaphase, the
sister chromatids did not separate?
Answers
Answer: A. One sisters cell would have more chromosomes than normal.
The other sisters cell would have fewer chromosomes than normal.
Explanation:
If sister chromatids do not split equally during anaphase of mitosis, one sisters cell would have more chromosomes than normal and the other sisters cell would have fewer chromosomes than normal.
Unequal splitting means that sister chromatids do not separate, resulting in both sister chromatids being pulled into the same sisters cell, leaving the other sisters cell without that chromosome altogether.
Homeostasis in the body is assocatied with
A. energy
B. cell communication
C. reproduction
D. antibiotics
Answers
In humans, freckles are a trait that exhibits simple dominance. The two alleles for this trait are freckles (A) and no freckles (a). A freckled man whose mother has no freckles marries a woman with no freckles. What is the probability that their first child will have freckles? Use the Punnett square to show your work.
Answers
Answer:
50 percent
Explanation:
Aa goes with aa
so their children's genotypes would be
Aa Aa aa and aa
so two with freckles and two without freckles which is why their first child has a 505 chance of having freckles
hope this helps :)
The probability of having a freckled child is 50%. because half of the children will have the genotype Aa, which is freckled, and half will have the genotype aa, which is no freckles.
What is a punnett square?A Punnett square is a tool used to predict the probability of an offspring having a particular genotype (genetic makeup) based on the genotypes of its parents. To create a Punnett square, we use the alleles of the parents and place them into a grid, with one allele from one parent on the top and the other allele from the other parent on the left-hand side.
In this scenario, the father has a genotype of Aa (freckled) and the mother has a genotype of aa (no freckles). The mother only has the recessive allele (a) and the father has both dominant (A) and recessive (a) allele.
The probability of having a freckled child is 50%. because half of the children will have the genotype Aa, which is freckled, and half will have the genotype aa, which is no freckles. The dominant A allele will mask the recessive a allele and make the offspring freckled.
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Identify the changes as either chemical (C) or physical (P). If chemical, what is the evidence?
Burning a piece of paper
Tearing a piece of paper
Digesting food
Heating a cup of water
Mixing baking soda and vinegar
Mixing calcium chloride and water
Answers
Answer:
1). P
2 C
3 P
4 P
5. P
Explanation:
THSE Answer are right a
Which climate is most likely found in a low-pressure belt?
A. Rain Forest
B. Rain Shadow
C. Desert
D. Mediterranean
Answers
Answer:
A
Explanation:
Answer:
Its desert
Explanation:
Took the quiz.A PE X
is the above cell a plant cell or animal cell? provide two observable
Answers
Explanation:
you have not showed the cell..please
plsss help me
Thank you
Answers
I think it is A if it’s wrong I’m sorry:)
12. How does oxygen in the air get into the blood?
A through the nose b, through the throat
c. through mouth
d. through the tiny capillaries.
13. What will happen to the cells of the body when there is absence of oxygen?
A. The cells will continue to grow and multiply
b. The cells will be inactive
c. The cells will survive
d. The cells will survive
Answers
Answer:
12.d
13. b
if we don't get oxygen if will literally strangle our cells
In a manufacturing assembly line, products get larger and more complete as they pass along. Briefly explain how this compares to your digestive system.
Answers
Answer:
Our digestive system does the opposite of an assembly line. Instead of getting complex and bigger, they are broken down into smaller pieces by mechanical and chemical processes in our digestive tract.
Explanation:
Food is first broken down mechanically in our mouths. Then chemicals in the stomach digest the food further. There also is mechanical digestion in this section of the digestive tract. As the food descends, more nutrients are absorbed in the intestines, in this areas the contraction of the muscles helps to move the processed food up to the end of the "assembly line" where the product is less complex than it used to be since the nutrients are now in our body.
1.What is the function of melanin in the epidermis?
a. To provide support for blood vessels
b.To waterproof and protect the skin surface
c.To protect tissues from ultraviolet radiations
d. To stimulate the growth of hairs in the follicles
2.Which actions takes place in the stomach?
a.Protein is broken down
b. Amylase breaks down starches into sugar molecules
c. Large fat molecules are digestive into smaller fat molecules
d.Nutrients are absorbed and distributed to different body cells
3.Which structure moves down as its muscles contract?
a. Diaphragm
b.Pharynx
c.Ribs
d. Trachea
4.What do we call the muscles that we can control?
a.Voluntary
b.Cardiac
c.Smooth
d.Involuntary
5.Which of the following protect the lungs?
a.Clavicle
b.Ribs
c.Scapula
d. Sternum
6.It is the largest organ in our body.
a.Intestine
b.Pelvic bone
c.Skin
d.Eyes
7.How does air enter your body?
a.Trough the digestive tract
b.Trough the respiratory tract
c. Trough the pores of the skin
d.Trough the ear canal
8.Which of these is NOT a part of the digestive system?
a. Kidneys
b.Mouth
c.Stomach
d. Esophagus
sana po sagutin niyo ng maayos
Answers
Answer:
1.c
2.c
3.a
4.a
5.b
6.c
7.b
8.a
Explanation:
sana makatulong pafollow na den kung want mo lang naman:)
Which characteristic helps grasses survive dry conditions?
long, flexible stems
long, skinny leaves
small, soft flowers
deep roots
Answers
answer: deep roots. hop u do good on ur test guys
Ttybbe&cr edddbehegeheehwwwyyww
Answers
what is Otis’s gene versions for body color
Answers
Answer:
giao
Explanation:
HELP!
Which types of organisms can be multicellular or unicellular?
Producers
Consumers
All of the above
None of the above
Answers
[ If you don’t count in the bacteria, protist, or fungi (all unicellular) then I guess it could also be only producers?]
The Punnett square below shows the genotypes of Amelia's parents. R alpha If R represents the dominant gene for straight hair and r represents the recessive gene for curly hair , which statement best explains how Amelia was born with curly hair ?
Answers
Answer:
She received 2 recessive genes
Explanation:
Hope this helps
Please help///6. What is the genotype of a color-blind male with long fingers, if s = long fingers? If all of the children have normal vision and short fingers (S = short fingers), what is the likely genotype of the mother?
Answers
Answer:
WwSs WwSs
Explanation:
there's a quizlet I found it on!
Two parents with widow's peak and short fingers have a child with a continuous hairline and long fingers. What are the genotypes of the two parents? (W = widow's peak; S = short fingers)
WwSs WwSs
Is tetracycline selectively toxic?
Answers
Explain what Dawkins means when discussing local rules on the cellular level (both in terms of tissue development and of their internal chemistry).
Answers
Answer:
The development of the embryo is what Dawkins means that is performed by the local rules on the cellular level in terms of internal chemistry and tissue development. A small and local unit present in the human body that follows the rules of the on the particular scale.
Dawkins explains that development that various tissues develop and controls other cellular responses during the development of the embryo is in progress. He also suggested that differentiation of the cells is asymmetric cell division.
pls, help 100 points whoever answers gets brainiest!
Which scenario describes a relationship of parasitism?
A . A tapeworm latches itself in the intestines of a rat, feeding off all the nutrients eaten by the rat.
B. Oxpecker birds eat parasitic ticks off the backs of zebras.
C . Birds feed off the insects that are stirred up from the grasses as cattle move through.
D.A polar bear catches a seal for dinner.
Answers
Answer:A . A tapeworm latches itself in the intestines of a rat, feeding off all the nutrients eaten by the rat.
Explanation:
Answer:
a
Explanation:
paratism is the practice of living as a parasite in or on another organism and a tapeworm is a parasite living in the rat so it is a
McCabe and castle conducted experiments to assess whether a brain image influenced the way students perceived the quality of a scientific article. When other experiments attempted to replicate the results they found
Answers
Answer:
good night yetydysjdiysodydtsdjcooysgic
What affect does the Sahel's climate and physical characteristics have on population distribution?
Answers
Answer:
The Sahel has been labeled as one of those regions with the danger of overpopulation. It has been described with adjectives such as semi-arid, hot, dry, windy or sunny.
Sources have it that the G5 Sahel countries which include Mali, Niger, Burkina Faso, Mauritania, Chad will increase from about 84 million inhabitants in 2019 to 197 million in 2050. This projection includes people under 15 years of age which comprise about 50% of the entire population.
The climate itself doesn't seem to deter population growth. What seems to be occurring is sedentarization. This is due to rapid desertification and drought which have persisted for some time.
Explanation:
Sedentarization refers to the choice of a group of people who usually are very nomadic or migratory to settle permanently in a place.
This is usually due to a more favorable weather and topography which supports agriculture.
Cheers!
Which of the following would be an example of osmosis?
A) the smell of ammonia spreading through the room
B) the shriveling of a small after salt is poured on it
C) water being poured into a glass
D) the absorption of water by a sponge
Answers
Answer:
D
Explanation:
An example of osmosis occurs when a sugar solution and water, top, are separated by a semipermeable membrane. The solution's large sugar molecules cannot pass through the membrane into the water. Another good example of osmosis would be dipping a sponge into water, because there is a higher concentration outside, so the water goes in and makes the sponge expand
Answer:
B) the shriveling of a cell after salt is poured on it
Explanation:
During osmosis, water moves from a low concentration to a high concentration. Since the salt is outside the cell membrane, it makes the outside have a higher concentration than the inside of the cell; causing the water to move from the cell and the cell shriveling.
Methods used to study mineral elements present in plants
Answers
Answer:
The quantitative concentration of mineral elements present in horticultural crops can be determined by atomic absorption spectrometry (AAS), inductively coupled plasma atomic emission spectrometry (ICP-AES), inductively coupled plasma mass spectrometry (ICP-MS), flame atomic absorption spectrometry (FAAS)
Which of the following is an unintended consequence of cutting down trees?
A. Cleared land can be used for agriculture.
B. Depleting wooded areas means fewer habitats for forest
organisms.
C. People burn wood for fuel.
O. D. People use wood to build houses
Answers
Answer:
B. Depleting wooded areas means fewer habitats for forest organisms
4 pic 1 word
what is the word?
Answers
Answer:
tree
Explanation:
Answer:
Life ?
Explanation:
The bottom right is a weird looking person but yea. Ain't no way that bottom right thingy is a tree !? I thought it was a human with wings
Which product is the result of mitosis?
A. two daughter cells
B. two identical nuclei
C. two strands of DNA
D. two sister chromatids
Answers
Answer:
Pretty sure that its C im really sorry if I'm wrong
A closed system is best characterized as a system in which: (3 points)
Answers
Answer:
A closed system is a physical system that does not allow transfer of matter in or out of the system, though, in different contexts, such as physics, chemistry or engineering, the transfer of energy is or is not allowed.
Gas exchange involves the transport of two respiratory gases, oxygen and carbon dioxide. Review how each gas is transported between the atmosphere and the cells of your body by completing this exercise. Drag each statement into the appropriate bin depending on whether it applies to oxygen only, carbon dioxide only, or both oxygen and carbon dioxide.
Answers
Answer:
1)required for cellular respiration(Oxygen only)
2) net diffusion from alveoli to lung capillaries(Oxygen only)
3)sometimes transported as bicarbonate(Carbon Dioxide Only)
4)net diffusion from body tissues to blood(Carbon Dioxide Only)
5)net diffusion from lung capillaries to alveoli(Carbon Dioxide Only)
6)waste product of cellular respiration(Carbon Dioxide Only)
7)enters alveoli during inhalation(Both Oxygen and carbon dioxide)
8)transported by hemoglobin(Both Oxygen and carbon dioxide)
Explanation:
Gas exchange is a mechanism that helps the body to get the necessary Oxygen that is required for cellular respiration to take place
There is diffusion of oxygen to capillaries that are present in the lungs from the alveoli.
Gas exchange is a mechanism that is also responsible for the body to get rid of waste such as carbon dioxide,
why is whitefish used to study mitosis
Answers
Answer:
The whitefish embryo is a good place to look at mitosis because these cells are rapidly dividing as the fish embryo is growing. ... This is why mitosis is only visible in cells that are dividing, like the whitefish embryo and the onion root tip. Mitosis can take several hours to complete.
Whitefish (typically the embryos or cells of fish species like zebrafish) is commonly used in scientific research, including the study of mitosis, for several reasons.
Zebrafish embryos are transparent, which allows researchers to observe and study cellular processes, including mitosis, under a microscope easily. This transparency enables real-time imaging of cell division without the need for invasive techniques.
Genetic manipulability: Zebrafish are amenable to genetic manipulation techniques, such as gene knockdown or overexpression, which allows researchers to study the effects of specific genes or proteins on mitosis. This genetic manipulability helps to uncover the underlying mechanisms and signaling pathways involved in mitotic processes.
High fecundity: Zebrafish are highly fertile and produce a large number of embryos, making it easier for researchers to obtain a sufficient sample size for their experiments.
Ethical considerations: The use of zebrafish embryos in research carries fewer ethical concerns compared to studies involving mammals. Their use can help reduce the need for more complex and higher-order animal models.
Overall, the unique characteristics and advantages of whitefish, specifically zebrafish, make them a suitable model organism for studying various biological processes, including mitosis.
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