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.

Biology & Microbiology

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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.

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology

Which of the following is technically NOT a fruit?

A) Tomato B) Cucumber C) Pumpkin D) Lettuce E) Green pepper

Biology & Microbiology