Which of the following refers to the process of attaching a handle to a tool?
a. haft
b. hilt
c. fix
d. flake
e. artifact
a
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Which of the following represents a pre-mating isolation mechanism?
a. zygote invariability b. sperm-egg incompatibility c. offspring sterility d. mechanical incompatibility
H. J. Muller is known for his research on the:
A. relationship between mutations and narcotic drugs B. causes of spontaneous mutation C. relationship between induced mutation and x-rays D. sequencing of genes on the chromosome
Thanks to efforts of the United Nations, we now have accurate demographic statistics on indigenous peoples
Indicate whether the statement is true or false.
Incest taboos universally apply to:
a. Members of the same village. b. Mothers and sons. c. First cousins. d. Cross cousins but not parallel cousins.