A black guinea pig crossed with an albino guinea pig produced twelve black offspring. When the albino was crossed with a second black animal, six blacks and six albinos were obtained. What is the best explanation for this genetic situation?
A) Albino is recessive; black is dominant.
B) Albino is dominant; black is incompletely dominant.
C) Albino and black are codominant.
D) Albino is recessive; black is codominant.
Answer: A
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A. primary B. secondary C. tertiary D. quaternary E. hepternary
If the probability of X occurring is 1 in 4, and the probability of Y occurring is 1 in 5, the probability
of both occurring is
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a. 10 b. 100 c. 1000 d. 100,000 e. 1,000,000
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a. flower stalk b. shoot cap c. lateral meristem d. terminal bud e. lateral bud