Formation of a tetraploid plant species from two different diploid parental species of plants is an example of

A. punctuated equilibrium.
B. gradualism.
C. extinction.
D. a postzygotic barrier to evolution.
E. a prezygotic barrier to evolution.


A. punctuated equilibrium.

Biology & Microbiology

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A problem with the action or production _______ leads to both type I and type II diabetes mellitus

A. glucagon B. growth hormone C. thyroid hormone D. insulin E. cortisol

Biology & Microbiology

You’ve just finished a big meal and are

relaxing in front of a fire reading your favorite book. The ___ division of your ___ nervous system is at work.

a. parasympathetic--autonomic b. parasympathetic--somatic c. sympathetic--autonomic d. sympathetic--somatic e. autonomic--somatic

Biology & Microbiology

____ is an exocrine gland. 

A. The kidney B. The thyroid C. An ovary D. The pancreas

Biology & Microbiology

What occurs during the stage of protein synthesis called translation?

What will be an ideal response?

Biology & Microbiology