MCB 317 Exam 2 Questions with Verified
Correct Answers
As discussed in lecture, X-linked traits do not pass from father to son but may pass from
grandfather to grandson.(T/F)
True
In lecture we discussed genetic screens and genetic selections. Based on that discussion,
which is the more powerful approach?
A. A genetic screen is more powerful than a genetic selection
B. A genetic selection is more powerful than a genetic screen
B. A genetic selection is more powerful than a genetic screen
As discussed in lecture, the term yeast genomic library can refer to a collection of bacterial
colonies containing a variety of clones, a pooled mixture of bacteria containing a variety of
clones, or to a solution of DNA plasmids containing a variety of clones.
(T/F)
True
TRUE or FALSE As described in lecture, mitotic recombination can lead to loss of
heterozygosity.
True
As discussed in lecture, each and every cell in a female human makes a choice as to which of
the two copies of the X chromosome becomes inactivated (T/F)
False
TRUE of FALSE As described in lecture, the initial assembly of heterochromatin occurs by a
spreading mechanism
True
As discussed in lecture, recombination occurs more frequently in mitosis than in meiosis. (T/F)
False
, As described in lecture, the genetic maps of the genomes of different organisms have
different total numbers of centimorgans. (T/F)
True
(T/F) As described in lecture, polymorphisms can be used to construct genetic maps.
true
If the size of the DNA in a single human cell is scaled up 1,000,000 fold it will be
approximately the diameter of angel hair pasta. If all the chromosomes of that cell are laid
end-to-end they would stretch from UIUC to approximately where?
A. Rantoul
B. Peoria
C. Florida
D. Hawaii
E. The Moon
Florida
Indicate which of the following statements are TRUE and/or FALSE.
i = In lecture we discussed the fact that, eye color is a continuous trait in humans
ii = In lecture we discussed the fact that skin color is a quantitative trait in human
Both true
Indicate which of the following statements are TRUE and/or FALSE.
i = In yeast the phenotype associated with the SEC21-1 allele is dominant to wild-type.
ii = Genome-wide association studies utilize genetic maps of polymorphisms.
Both true
Indicate which of the following statements are TRUE and/or FALSE.
i = As discussed in lecture, northern blots can be use to determine in which tissues a protein is
produced.
ii = As discussed in lecture, tetrad analysis in yeast involves the manipulation of individual
cells.
A. Both i and ii are TRUE
Correct Answers
As discussed in lecture, X-linked traits do not pass from father to son but may pass from
grandfather to grandson.(T/F)
True
In lecture we discussed genetic screens and genetic selections. Based on that discussion,
which is the more powerful approach?
A. A genetic screen is more powerful than a genetic selection
B. A genetic selection is more powerful than a genetic screen
B. A genetic selection is more powerful than a genetic screen
As discussed in lecture, the term yeast genomic library can refer to a collection of bacterial
colonies containing a variety of clones, a pooled mixture of bacteria containing a variety of
clones, or to a solution of DNA plasmids containing a variety of clones.
(T/F)
True
TRUE or FALSE As described in lecture, mitotic recombination can lead to loss of
heterozygosity.
True
As discussed in lecture, each and every cell in a female human makes a choice as to which of
the two copies of the X chromosome becomes inactivated (T/F)
False
TRUE of FALSE As described in lecture, the initial assembly of heterochromatin occurs by a
spreading mechanism
True
As discussed in lecture, recombination occurs more frequently in mitosis than in meiosis. (T/F)
False
, As described in lecture, the genetic maps of the genomes of different organisms have
different total numbers of centimorgans. (T/F)
True
(T/F) As described in lecture, polymorphisms can be used to construct genetic maps.
true
If the size of the DNA in a single human cell is scaled up 1,000,000 fold it will be
approximately the diameter of angel hair pasta. If all the chromosomes of that cell are laid
end-to-end they would stretch from UIUC to approximately where?
A. Rantoul
B. Peoria
C. Florida
D. Hawaii
E. The Moon
Florida
Indicate which of the following statements are TRUE and/or FALSE.
i = In lecture we discussed the fact that, eye color is a continuous trait in humans
ii = In lecture we discussed the fact that skin color is a quantitative trait in human
Both true
Indicate which of the following statements are TRUE and/or FALSE.
i = In yeast the phenotype associated with the SEC21-1 allele is dominant to wild-type.
ii = Genome-wide association studies utilize genetic maps of polymorphisms.
Both true
Indicate which of the following statements are TRUE and/or FALSE.
i = As discussed in lecture, northern blots can be use to determine in which tissues a protein is
produced.
ii = As discussed in lecture, tetrad analysis in yeast involves the manipulation of individual
cells.
A. Both i and ii are TRUE
