The fact that blind luck (more technically known as sampling error) can account for changes in allelic frequencies in populations is the evolutionary mechanism called ________. [two words]

Fill in the blank(s) with correct word


genetic drift

Biology & Microbiology

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Effector molecules

A) are associated with the induction of enzyme synthesis. B) are associated with the repression of enzyme synthesis. C) induce conformational changes. D) are often small organic molecules. E) all of the above

Biology & Microbiology

A protist cell may contain

a. a nucleus. b. a cytoskeleton. c. more than one chromosome. d. Golgi bodies. e. all of these

Biology & Microbiology

In meiosis, sister chromatids separate and move to opposite poles of the spindle during ____________________. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

The hormones secreted by the anterior pituitary are ____.

A. peptide hormones B. neurotransmitters C. steroid hormones D. second messengers E. polar

Biology & Microbiology