A karyotype reveals that an individual is XYY. Based on your knowledge of human genetics you
correctly conclude that this individual is phenotypically __________ and __________.
a. female; with criminal tendencies
b. female; sterile
c. female; fertile
d. male; sterile
e. male; fertile
E
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Which plants are planted to increase the amount of nitrogen in the soil?
a. evergreens b. legumes c. mints
d. grasses e. corn
Which one of the following initiates implantation by secreting enzymes that break down the endometrium?
A) inner cell mass B) endoderm C) chorion D) mesoderm E) trophoblast
The products of genes that are switched on in
specific tissues at specific stages of development affect mainly a. gene replication. b. gene transcription. c. mRNA transcript processing. d. translation. e. post-translational processing of proteins
A certain species of land snail exists as either a cream color or a solid brown color. Intermediate individuals are relatively rare. Which of the following terms best describes this?
A) artificial selection B) directional selection C) stabilizing selection D) disruptive selection E) sexual selection