Sense organs
A. are responsible for perception.
B. detect stimuli.
C. change the activity of the endocrine system.
D. only respond to electrical changes.
B. detect stimuli.
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In December of 1998, Nkem Chukwu of Houston,
Texas, gave birth to a. pentuplets. b. sextuplets. c. octuplets. d. the first human clone. e. none of these.
Frequency-dependent selection acts to decrease the frequency of which phenotype in a population?
a. The least common phenotype
b. The most common phenotype c. The most conspicuous phenotype d. The most camouflaged phenotype e. The phenotype at an extreme of the normal distribution
Refer to the accompanying figure. Based on the phenotypes of the third generation, the genotype of the father in the second generation must be:
a. homozygous for albinism.
b. heterozygous for hair color.
c. heterozygous for albinism.
d. X-linked.
e. dominant
Which of the following is technically NOT a fruit?
A) Tomato B) Cucumber C) Pumpkin D) Lettuce E) Green pepper