A recessive allele in tigers causes the white tiger. If two normally pigmented tigers are mated and produce a white offspring, what percentage of their remaining offspring would be expected to have normal pigmentation?
A) 25% B) 50% C) about 66% D) 75% E) about 90%
D
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Define the following terms:
(a) the insertion of a skeletal muscle: (b) the origin of a skeletal muscle: (c) the action of a skeletal muscle:
Ensuring that all foods derived from animal sources are thoroughly cooked, all milk is pasteurized, and all drinking water is chlorinated are ways to avoid becoming infected with:
a. Helicobacter. b. Arcobacter. c. Enterobacter. d. Campylobacter.
When a certain form of a trait increases the fitness of the individual, this allele will tend to ____ over time
a. affect the function of vestigial structures b. lead to extinction of the population c. be eliminated from the population d. decrease in frequency in the population e. increase in frequency in the population
Which of the following statements is (are) correct about an oxidation-reduction (or redox) reaction?
A) The molecule that is reduced gains electrons. B) The molecule that is oxidized loses electrons. C) The molecule that is reduced loses electrons. D) The molecule that is oxidized gains electrons. E) Both A and B are correct.