If black and white true-breeding mice are mated and the result is all gray offspring, what inheritance pattern would this be indicative of?
a. Dominance.
b. Codominance.
c. Multiple alleles.
d. Incomplete dominance.
Ans: d. Incomplete dominance.
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In a pond ecosystem, a crayfish feeds on three species of algae. It is in turn preyed upon by one species of fish and a heron. The heron also preys upon the fish. What is the minimum number of food chains in this food web?
A. 2 B. 3 C. 4 D. 5 E. 6