BIOL 2300 Exam 2: Quiz Questions Save
Terms in this set (60)
How do we know that specific the genes segregate together during gamete formation
genes are linked on a single
chromosome, in contrast to
being located on separate
chromosomes?
,Imagine that you have joined a a) h
genetics lab on campus and b) eyg
want to gain experience c) th
mapping genes in Drosophila. d) cu
1) 9.5
You conduct a series of two- 2) 9.0
point mapping crosses 3) 7.7
involving five genes located on 4) 6.8
chromosome III and obtain the
following percentage of
recombinant offspring:
h-cu: 23.5%
eyg-h: 9.0%
eyg-cu: 14.5%
rai-eyg: 18.5%
rai-h: 9.5%
rai-cu: 33.0%
th-cu: 6.8%
th-h: 16.7%
th-eyg: 7.7%
th-rai: 26.2%
Considering that rai is near the
end of chromosome III,
construct a map of these genes.
For (a), (b), (c), and (d), enter the
correctly named gene, for
example, if you think, eyg goes
in blank "d", then enter eyg.
Order your genes by their
distance to rai, with the gene
closest to rai going in blank a
and the gene most distant
going in blank d. For blanks 1, 2,
3, and 4, enter the map
, distances for the respective
genes. For example, the
distance in blank 1 would be the
distance between rai and the
gene you entered in bla
The genes for mahogany eyes red eyed, gray bodied
and ebony body are mahogeny eyed, gray bodied
approximately 25 map units red eyed, ebony bodied
apart on chromosome 3 in mahogeny eyed, ebony bodied
Drosophila. Assume that a
mahogany-eyed gray bodied
female was mated to an red
eyed ebony-bodied male and
that the resulting F 1
phenotypically wild-type (red
eyed, gray bodied) females
were mated to mahogany,
ebony males to obtain an F 2
generation. Which of the
following phenotypes would be
expected in the F 2 offspring?
Hint: Really pay attention to
what the question is asking you
to cross - approach this in a
step-wise fashion and you
should be fine.........
Terms in this set (60)
How do we know that specific the genes segregate together during gamete formation
genes are linked on a single
chromosome, in contrast to
being located on separate
chromosomes?
,Imagine that you have joined a a) h
genetics lab on campus and b) eyg
want to gain experience c) th
mapping genes in Drosophila. d) cu
1) 9.5
You conduct a series of two- 2) 9.0
point mapping crosses 3) 7.7
involving five genes located on 4) 6.8
chromosome III and obtain the
following percentage of
recombinant offspring:
h-cu: 23.5%
eyg-h: 9.0%
eyg-cu: 14.5%
rai-eyg: 18.5%
rai-h: 9.5%
rai-cu: 33.0%
th-cu: 6.8%
th-h: 16.7%
th-eyg: 7.7%
th-rai: 26.2%
Considering that rai is near the
end of chromosome III,
construct a map of these genes.
For (a), (b), (c), and (d), enter the
correctly named gene, for
example, if you think, eyg goes
in blank "d", then enter eyg.
Order your genes by their
distance to rai, with the gene
closest to rai going in blank a
and the gene most distant
going in blank d. For blanks 1, 2,
3, and 4, enter the map
, distances for the respective
genes. For example, the
distance in blank 1 would be the
distance between rai and the
gene you entered in bla
The genes for mahogany eyes red eyed, gray bodied
and ebony body are mahogeny eyed, gray bodied
approximately 25 map units red eyed, ebony bodied
apart on chromosome 3 in mahogeny eyed, ebony bodied
Drosophila. Assume that a
mahogany-eyed gray bodied
female was mated to an red
eyed ebony-bodied male and
that the resulting F 1
phenotypically wild-type (red
eyed, gray bodied) females
were mated to mahogany,
ebony males to obtain an F 2
generation. Which of the
following phenotypes would be
expected in the F 2 offspring?
Hint: Really pay attention to
what the question is asking you
to cross - approach this in a
step-wise fashion and you
should be fine.........
