Genetic equilibrium and allele frequencies are
maintained by all EXCEPT which one of the
following?
a. lack of gene flow.
b. large population interbreeding freely
c. differential survival and reproduction
d. random mating
e. absence of mutations
Answer: c
You might also like to view...
Identical twins can result from
a. the fusion of two sets of identical gametes. b. a division of a zygote into two separate cells that develop into two separate embryos. c. the fusion of two paternal gametes with a single maternal gamete that then divides. d. a lack of chromosomal separation during meiosis resulting in gametes that are diploid and don't need to be fertilized. e. a mechanism that is not understood.
Ecologically mud flat areas are a focal area of:
a. nutrient recycling. b. primary production. c. tertiary consumers. d. nutrient sink. e. sessile epifauna.
Four of the following are characteristic of morphogens. Which one is the exception?
a. They are long-range signals in pattern formation. b. They are encoded by master genes. c. They affect gene splicing. d. Their concentration decreases with distance from source. e. They affect development.
Cilantro tastes soapy to some people because
A) there is genetic variation in at least one of the three types of receptors needed to perceive a nonsoapy flavor. B) they are not an identical twin. Only identical twins detect a soapy flavor in cilantro, while all other people do not detect this soapy flavor. C) their ancestors did not live in cultures where cilantro was a common ingredient in the cuisine. D) they were not raised in an environment where cilantro was a common ingredient in the cuisine.