Many species of snakes lay eggs, but in the forests of northern Minnesota where growing seasons are short, only live-bearing snake species are present. This trend toward species that perform live birth is an example of

A) natural selection.
B) sexual selection.
C) species selection.
D) goal direction in evolution


Answer: C) species selection.

Biology & Microbiology

You might also like to view...

Which of the following is TRUE about exergonic reactions?

A. Exergonic reactions have a positive G. B. Exergonic reactions consume energy. C. Exergonic reactions are found only in biological systems. D. Exergonic reactions are catabolic. E. Exergonic reactions measure of the strength of an ionic bond.

Biology & Microbiology

Testosterone is secreted by the _____

a. testes c. prostate gland b. hypothalamus d. pituitary gland

Biology & Microbiology

At the end of meiosis I, the resulting two cells are

a. identical in all ways. b. genetically identical. c. genetically different. d. hexaploid. e. prepared to enter interphase so the chromosomes can be replicated.

Biology & Microbiology

Which of the following injuries is most likely to happen to the ankle?

A. muscular dystrophy B. sprain C. strain D. convulsion E. bursitis

Biology & Microbiology