Some human diseases are more abundant in small populations due to genetic drift.

a. true
b. false


Ans: a. true

Biology & Microbiology

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Ultraviolet radiation at the bactericidal wavelength destroy bacteria by

A. destroying endospores. B. damaging nucleic acid. C. preventing spore formation. D. denaturing proteins.

Biology & Microbiology

Which is a likely result of a mass extinction?

a. create “empty niche space” that can stimulate radiation of surviving groups b. eliminate non-beneficial alleles from gene pools c. increase the rate of new mutations d. decrease the rate of new mutations e. cause mutations that have greater than usual effect

Biology & Microbiology

A group of 3 nucleotides acts as a "code word" or template for making

1 amino acid. 2 amino acids. 3 amino acids. 4 amino acids. none of the answer choices are correct.

Biology & Microbiology

The posterior portion of the neural tube will develop into the frog's

A) spinal cord. B) brain. C) blastocoel. D) digestive tract. E) anus.

Biology & Microbiology