Most bacterial and archaeal cells divide by
A. binary fission.
B. meiosis.
C. mitosis.
D. All of the choices are correct.
Answer: A
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Some multifactorial traits are determined by many interacting genes, each of which may have several alleles. If such a trait is measured in a population, what phenotypic pattern is expected?
A) All individuals will have the same phenotype. B) Two types of individuals will exist, and most will have the dominant phenotype. C) Different individuals will each have one of a few discrete phenotypes. D) The population will have continuous variation in phenotypic expression.
Some plants require water for reproduction. This is because
a. it is needed for germination of the spores. b. the eggs would dry out otherwise. c. the sperm are motile and need to swim to the egg to accomplish fertilization. d. the plants must be actively growing in order to reproduce. e. the seeds will be carried on the water to new sites.
Which of the following can impact methylation
patterns? a. drugs. b. exercise. c. stress. d. diet. e. all of these
Imagine a hypothetical population of elephants and rabbits in which both species remain at carrying capacity over many generations
Who would have more offspring that survive to be adults and reproduce during their lifetime, a mating pair of elephants or a mating pair of rabbits? Explain your answer.