Dosage compensation refers to the fact that:
A. the level of expression for a given gene is
directly related to the number of copies of the
gene.
B. genes on the Y chromosome must be
expressed at higher levels than would
otherwise be the case because they are not
homologous with genes on the X
chromosome.
C. genes on the X chromosome must be
expressed at lower levels than would
otherwise be the case because they are not
homologous with genes on the Y
chromosome.
D. X chromosome genes must be regulated
differently in males and females because
members of one sex have 2 X chromosomes,
whereas members of the other have only 1.
E. None of these choices are correct.
D
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The release of neurotransmitter from the presynaptic cell is an example of:
A. phagocytosis. B. endocytosis. C. transcytosis. D. exocytosis.
Human traits are controlled only by the genetic material found in the 46 chromosomes
a. True b. False
Surplus individuals in the __________ disperse and find another habitat in which to settle and
reproduce. a. metahabitats b. sink habitats c. source populations d. source habitats e. K-selected populations
What name is given to a region of DNA that varies from person to person?
A) genetic marker B) short tandem repeat C) sticky end D) restriction fragment