The type of cell division that produces two genetically identical daughter cells is important for all of the following functions EXCEPT ________.

A. production of sperm and eggs
B. cell replacement
C. growth of a multicellular organism
D. asexual reproduction


A. production of sperm and eggs

Biology & Microbiology

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Synteny can be described as the:

A. degree of conservation between sequences. B. evolution of orthologs. C. evolution of paralogs. D. conserved gene order between two organisms. E. conserved number of chromosomes between two organisms.

Biology & Microbiology

What are some characteristics of polyploidy plants?

a. They tend to be weaker and smaller than diploid plants b. They tend to be bigger and stronger than diploid plants c. They tend to be weaker, but bigger than diploid plants d. They tend to be smaller, but stronger than diploid plants

Biology & Microbiology

Which of the following is a case of altruism?

A. A plant releases allelopathic chemicals, harming its competitors and itself. B. A prairie dog gives up a foraging opportunity to keep watch for predators. C. A shrimp digs a burrow that it shares with a goby that keeps watch for predators. D. A baby bird aggressively begs, resulting in less food available to its siblings. E. Individuals in a flock of birds are less susceptible to predators than individuals alone.

Biology & Microbiology

Which of the following statements could explain why BC homozygous birds are unusually small?

Black-cheeked BC zebra finches are extremely desirable, but relatively rare. This phenotype is caused by a recessive mutation, but the mating of two BC birds is considered unethical because it results in very small birds. Therefore, BC birds are created by crossing carriers of the BC gene. Despite problems with the homozygous recessive, some unscrupulous breeders continue to breed them together because of the high prices they fetch. A. The BC gene causes a mutation in a growth gene. B. The BC gene and a gene for growth are very close to one another on the same chromosome. C. The BC gene and a gene for growth are both mutated. D. The dominant version of the cheek color gene (GC) encodes a gene for normal size. E. The BC gene and growth gene are close together on the same chromosome and/or both of these genes are mutated.

Biology & Microbiology