Accidents can occur in meiosis wherein members of a chromosome pair fail to separate at anaphase. This is called ________.

A. chiasma
B. genetic recombination
C. genetic variation
D. nondisjunction


D. nondisjunction

Biology & Microbiology

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Which of the following reactions is classified as a heterofermentation?

A) hexose 2 lactate + 2 H+ B) HCOOH H2 + CO2 C) glucose lactate + ethanol + CO2 + H+ D) fructose 3 acetate + 3 H+

Biology & Microbiology

Which of the following is consistent with the principle of base pairing?

(a) purine-purine (b) pyrimidine-pyrimidine (c) adenine-thymine (d) guanine-thymine

Biology & Microbiology

Shallow water benthic algae distribution is dependent upon ________ when close to shore

a. sunlight and turbidity b. water depth and turbidity c. sunlight and substrate d. water depth and oxygen levels

Biology & Microbiology

Individuals with Lesch—Nyhan syndrome exhibit

A) urine that turns black when exposed to air. B) compulsive self-mutilation behaviors. C) lighter than normal pigmentation of skin, hair, and eyes. D) severe anemia. E) a cherry-colored spot on the retina.

Biology & Microbiology