Two species of snails are physically unable to mate. This is an example of

A) mechanical incompatibility.
B) ecological isolation.
C) behavioral isolation
D) geographic isolation.
E) temporal isolation.


A

Biology & Microbiology

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Which of the following is NOT an example of

the results of mitosis? a. a pair of identical twins b. a group of rooted plant cuttings from a single plant c. the cells produced by the asexual reproduction of a single-celled organism d. production of a gamete e. healing of a wound

Biology & Microbiology

The human genome contains about how many genes?

a. 1,000 b. 10,000 c. 20,000 d. 100,000 e. 200,000

Biology & Microbiology

In humans, the allele for red-green color blindness is X-linked and recessive (Xr; the dominant allele is called XR). A man with normal color vision marries a color-blind woman who gives birth to a color-blind daughter

What can be inferred from this information? A) The woman is XRXr. B) The man must be a carrier for the color blindness allele. C) The daughter must be heterozygous. D) The man is probably NOT the father of the daughter.

Biology & Microbiology

A yellow jacket, an insect in the order hymenoptera, stung me. A wasp, an insect in hymenoptera, stung me. A hornet, an insect in hymenoptera, stung me. I see a pattern. All insects in this order must have stingers. What type of reasoning does this represent?

A. inductive reasoning B. deductive reasoning C. reductionism D. comparative reasoning

Biology & Microbiology