What does it mean when it is said that the tree of human evolution is shallow?
A. that only humans that have the same
ethnicity will share a recent common ancestor
B. that humans haven't evolved much
C. that all humans, no matter how distantly
related they are, share a recent common
ancestor
D. that only humans on the same continent
will share a recent common ancestor
E. None of the answer options is correct.
C
You might also like to view...
The relationship of disease-causing organisms to an infected rabbit is one of
A. parasitism. B. commensalism. C. competition. D. herbivory. E. interference competition.
If a pure-breeding long-tail cat (LL) is crossed with a
pure-breeding cat with no tail (rumpy, ll), and a cat with a short tail (stumpy) is produced, the simplest explanation is a. a mutation. b. an X-linked gene. c. an incompletely dominant gene. d. a lethal gene. e. chromosomal aberration.
Which of the following physiological responses occurs in the human body when it becomes overheated?
A) slowing of the heart rate B) constriction of blood vessels in the skin C) increased blood flow to the skin D) retention of water
Salts and sugars work to preserve foods by creating a
A) depletion of nutrients. B) hypotonic environment. C) lower osmotic pressure. D) hypertonic environment. E) lower pH.