An animal, such as an earthworm, that is hermaphroditic
A) reproduces by unfertilized eggs.
B) reproduces by regeneration.
C) reproduces by budding.
D) spawns.
E) produces both eggs and sperm.
E
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A female horse can mate with a male donkey
but they will produce a mule that is sterile. This is an example of what type of isolation mechanism?
a. allopatric b. ecological c. behavioral d. mechanical e. temporal
A gene on the Y chromosome causes a rare disease. A woman married to a man with the disease has three children. The first two are daughters without the disease. The third is a son. What is the probability that the son will have the gene?
A) 0% B) 25% C) 50% D) 75% E) 100%
All of the following are diseases caused by viruses except
A. AIDS. B. strep throat. C. polio. D. measles. E. small pox.
What’s subsistence farming?