The type of reproductive isolation in which two populations are separated due to the sperm cells of one not being able to recognize the egg cells of the other is
A. hybrid inviability.
B. gametic isolation.
C. temporal isolation.
D. hybrid infertility.
E. ecological isolation.
B. gametic isolation.
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The two MAJOR divisions of the nervous system are the
a. autonomic and peripheral systems. b. sympathetic and parasympathetic systems. c. cranial and spinal nerves. d. central and peripheral nervous systems. e. brain and spinal cord.
A population of people who have lived in the middle of the jungle for thousands of years without
coming in contact with other individuals would show evidence of: a. genetic stasis. b. genetic equilibrium. c. random mating. d. an increase in non-harmful alleles. e. genetic polymorphism.
Which of the following is not a function of the skeletal system?
A) releases stored calcium and phosphorus when the body needs to use them B) produces blood cells C) produces muscle cells D) protects internal organs
A particular fibroblast mutation fails to move to the site of infection. It is discovered that this mutation causes a particular protein to be absent, which leads to premature actin mRNA translation. Which protein is most likely absent due to the
mutation? A) ZBP1 (zip code-binding protein) B) CPEB C) general transcription factor D) poly-A polymerase E) Src