Induced pluripotent stem cells are ____
a. produced from normal body cells
b. not used for human genetic research
c. a major cause of cancer
d. grown in the lab to produce clones
e. isolated from embryos
ANSWER: a
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The pan genome of a species is the genomic content that is
A) common to all strains of the same species. B) present in one or more strains of the same species. C) shared with all other prokaryotes. D) hypothetical or uncharacterized genome content of a species.
Maternal and paternal chromosomes are shuffled most during
a. anaphase II. b. metaphase I. c. prophase I. d. telophase II. e. interphase.
The role of CAP in the lac operon is:
a. repression of RNA polymerase binding to the promoter. b. negative control of the lac operon. c. enhancement of RNA polymerase binding to the promoter. d. to inactivate the repressor by binding to its allosteric site. e. the activation of allolactose binding to the repressor protein
In the laboratory, fruit flies (Drosophila) were artificially selected for the number of bristles on their bodies. One population (R) was selected for low numbers of bristles, a second population (S) for high numbers of bristles.
In order for the scientists to artificially select Drosophila for their number of bristles,
A. they had to induce mutations into their populations of Drosophila. B. genetic variation had to be present in the population. C. the number of bristles in each Drosophila had to be random. D. dramatic mutations had to be produced by the selection. E. they had to study the population for millions of years.