16) In a hypothetical situation, the genes for sex pilus construction
and for tetracycline resistance are located together on the same
plasmid within a particular bacterium. If this bacterium readily
performs conjugation involving a copy of this plasmid, then the result
should be
A) a bacterium that has undergone transduction.
B) the rapid spread of tetracycline resistance to other bacteria
in that habitat.
C) the subsequent loss of tetracycline
resistance from this bacterium.
D) the production of endospores
among the bacterium's progeny.
E) the temporary possession by
this bacterium of a completely diploid genome.
B) the rapid spread of tetracycline resistance to other bacteria in that habitat.
18) Which of these statements about prokaryotes is correct?
A)
Bacterial cells conjugate to mutually exchange genetic material.
B) Their genetic material is confined within vesicles known as
plasmids.
C) They divide by binary fission, without mitosis or
meiosis.
D) The persistence of bacteria throughout evolutionary
time is due to their genetic homogeneity (in other words, sameness).
E) Genetic variation in bacteria is not known to occur, because
of their asexual mode of reproduction.
C) They divide by binary fission, without mitosis or meiosis
19) Which of the following is least associated with the others?
A) horizontal gene transfer
B) genetic recombination
C) conjugation
D) transformation
E) binary fission
E) binary fission
7) The DNA fragments making up a genomic library are generally
contained in
A) BACs.
B) recombinant viral RNA.
C)
individual wells.
D) DNA-RNA hybrids.
E) radioactive
eukaryotic cells.
A) BACs.
37) Which of the following is true of embryonic stem cells but not of
adult stem cells?
A) They can differentiate into many cell
types.
B) They make up the majority of cells of the tissue from
which they are derived.
C) They can continue to replicate for an
indefinite period.
D) They can provide enormous amounts of
information about the process of gene regulation.
E) One aim of
using them is to provide cells for repair of diseased tissue.
B) They make up the majority of cells of the tissue from which they are derived.
48) As genetic technology makes testing for a wide variety of
genotypes possible, which of the following is likely to be an
increasingly troublesome issue?
A) use of genotype information
to provide positive identification of criminals
B) using
technology to identify genes that cause criminal behaviors
C)
the need to legislate for the protection of the privacy of genetic
information
D) discrimination against certain racial groups
because of major genetic differences
E) alteration of human
phenotypes to prevent early disease
C) the need to legislate for the protection of the privacy of genetic information