MOLECULAR BIOLOGY OF THE CELL EXAM
QUESTIONS AND VERIFIED ANSWERS GRADED
A+
1. What is in adaptive advantage of recombination between linked
genes? - ANSWER ✔ New allele combinations are acted upon by
natural selection.
2. Between which two genes would you expect the highest frequency
of recombination? - ANSWER ✔ E and G
3. A homozygous tomato plant with red fruit and yellow flowers was
crossed with a homozygous tomato plant with golden fruit and
white flowers. The F1 all had red fruit and yellow flowers. The F1
were testcrossed by crossing them to homozygous recessive
individual's, and the following offspring were obtained:
a. Red fruit and yellow flowers - 41
b. Red fruit and white flowers – 7
c. Golden fruit and yellow flowers - 8
d. Golden fruit and white flowers - 44
e. How many map units separate these jeans? - ANSWER ✔
15
4. Which of the following calculations require the use of the addition
rule of probability? - ANSWER ✔ Calculate the probability of a
child having either sickle-cell anemia or cystic fibrosis if parents
for each heterozygous for both.
5. How many unique gametes could be produced through
independent assortment by an individual with the genotype
AaBbCCdEE? - ANSWER ✔ 8
QUESTIONS AND VERIFIED ANSWERS GRADED
A+
1. What is in adaptive advantage of recombination between linked
genes? - ANSWER ✔ New allele combinations are acted upon by
natural selection.
2. Between which two genes would you expect the highest frequency
of recombination? - ANSWER ✔ E and G
3. A homozygous tomato plant with red fruit and yellow flowers was
crossed with a homozygous tomato plant with golden fruit and
white flowers. The F1 all had red fruit and yellow flowers. The F1
were testcrossed by crossing them to homozygous recessive
individual's, and the following offspring were obtained:
a. Red fruit and yellow flowers - 41
b. Red fruit and white flowers – 7
c. Golden fruit and yellow flowers - 8
d. Golden fruit and white flowers - 44
e. How many map units separate these jeans? - ANSWER ✔
15
4. Which of the following calculations require the use of the addition
rule of probability? - ANSWER ✔ Calculate the probability of a
child having either sickle-cell anemia or cystic fibrosis if parents
for each heterozygous for both.
5. How many unique gametes could be produced through
independent assortment by an individual with the genotype
AaBbCCdEE? - ANSWER ✔ 8
