Fraternal twins arise from
a. fertilization of two eggs by two sperm.
b. fertilization of two eggs by one sperm.
c. a split of the morula.
d. a split of the blastomere.
e. cleavage of the zygote.
A
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The change in the chromosome depicted between the top and the bottom in the accompanying figure represents a(n)
____.
a. inversion b. duplication c. reciprocal translocation d. deletion e. Philadelphia chromosome
A transport protein is analogous to a
a. wall partition. b. subway train. c. light switch. d. voice identification device. e. television receiver
Gamma radiation ________.
A. is used to sterilize some food products B. has poor penetrating power C. has a longer wavelength than UV radiation D. is a type of nonionizing radiation
What is the relationship between the wavelength of light and the quantity of energy per photon?
A) They have a direct, linear relationship. B) They are inversely related. C) They are logarithmically related. D) They are separate phenomena.