Natural selection drives changes in allele frequencies by influencing traits with a ____ basis
a. genetic
b. non-genetic
c. asexual
d. lethal
e. intermediate
ANSWER: a
You might also like to view...
Which of the following statements is NOT true?
a. Natural selection is based upon differential reproduction and survival. b. For evolution to occur in a population, there must be some variation. c. Most mutations have beneficial effects on traits. d. A population evolves when heritable change occurs in a line of descent. e. Over time, some genetic traits are more adaptive than others.
If the differently shaded portions of this molecule represent different polypeptide chains, then this
figure is representative of:
a. an amino acid.
b. the quaternary structure of a protein.
c. a steroid hormone.
d. cellulose.
e. a carotenoid.
Catecholamines are synthesized by the
A) adrenal gland. B) anterior pituitary gland. C) skeletal muscle. D) Schwann cells. E) hypothalamus.
What is the primary function of a contractile vacuole?
A. digestion B. movement C. expel water D. water intake E. reproduction