Pure-breeding yellow guinea pigs crossed with purebreeding
white ones produce only cream-colored
offspring. This pattern indicates incomplete
dominance. Rough hair is found to be dominant to
smooth hair. Give the F1 and F2 genotypic and
phenotypic ratios of a cross of a smooth, white
guinea pig with a homozygous, rough, yellow guinea
pig. What will be an ideal response?
Answer: F1: rough cream Yy Rr; F2: 3 YY R__ yellow rough, 6
Yy R__ cream rough, 3 yy R__ white rough, 1 YY rr yellow
smooth, 2 Yy rr cream smooth, 1 yy rr white smooth
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In models of logistic population growth, _____
A) the population growth rate slows dramatically as N approaches K B) new individuals are added to the population most rapidly at the beginning of the population's growth C) new individuals are added to the population as N approaches K D) only density-dependent factors affect the rate of population growth E) carrying capacity is never reached
Oil hydrogenation can produce a product, such as vegetable shortening or margarine, that is spreadable at room temperature because of an unusual bond that does not occur naturally. What is the name of this category of lipid?
A) Saturated fat B) Healthy fat C) Trans fat D) Cholesterol
List the five major functions of the skeletal system.
What will be an ideal response?
Answer the following questions true (T) or false (F)
1. Alpha cells of the pancreas make insulin. 2. Insulin stimulates liver cells to store glucose in the form of glycogen. 3. Cortisol is part of the body's stress response.