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
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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+
Which of the following is consistent with the principle of base pairing?
(a) purine-purine (b) pyrimidine-pyrimidine (c) adenine-thymine (d) guanine-thymine
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
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.