Bio 1301 Final Exam Flash Questions
Height (tallness) in humans is a polygenic trait. Assume the following: four genes that
determine height. Each dominant allele adds 2 inches of height to an individual. The
height of the recessive individual is 5 feet. What is the height of a person with the
genotype (AA, Bb, cc, DD)?
a. 5 feet, 4 inches
b. 5 feet, 10 inches
c. 5 feet, 8 inches
d. 6 feet
e. 5 feet, 6 inches - ANS-b. 5 feet, 10 inches
In the sweet pea crossing experiment by Bateson and Punnet, the F2 generation had
many more offspring with the phenotype of purple flowers P, long pollen L, and red
flowers p, and round pollen l than expected. The F2 generation can be explained
because...
a. in these sweet peas, there are always more PL gametes than there are pl gametes.
b. there were no recombination events between these genes during meiosis
c. flower color and pollen shape are within the same linkage group
d. all of these are correct - ANS-c. flower color and pollen are within the same linkage
group
You can see a recombination frequency of 0.3%. What does this indicate?
a. that the genes are located close together on the same chromosome
b. that the genes are on different chromosomes
c. that the genes are assorting independently most of the time
d. that the offspring has a large number of non parental phenotypes - ANS-a. that the
genes are located close together on the same chromosome
The Xist gene product...
a. is never translated into protein
b. is required for the production of Barr bodies
c. coats the X chromosome with RNA
d. associates with proteins to compact the chromosome
e. all of these statements are correct - ANS-e. all of these statements are correct
Height (tallness) in humans is a polygenic trait. Assume the following: four genes that
determine height. Each dominant allele adds 2 inches of height to an individual. The
height of the recessive individual is 5 feet. What is the height of a person with the
genotype (AA, Bb, cc, DD)?
a. 5 feet, 4 inches
b. 5 feet, 10 inches
c. 5 feet, 8 inches
d. 6 feet
e. 5 feet, 6 inches - ANS-b. 5 feet, 10 inches
In the sweet pea crossing experiment by Bateson and Punnet, the F2 generation had
many more offspring with the phenotype of purple flowers P, long pollen L, and red
flowers p, and round pollen l than expected. The F2 generation can be explained
because...
a. in these sweet peas, there are always more PL gametes than there are pl gametes.
b. there were no recombination events between these genes during meiosis
c. flower color and pollen shape are within the same linkage group
d. all of these are correct - ANS-c. flower color and pollen are within the same linkage
group
You can see a recombination frequency of 0.3%. What does this indicate?
a. that the genes are located close together on the same chromosome
b. that the genes are on different chromosomes
c. that the genes are assorting independently most of the time
d. that the offspring has a large number of non parental phenotypes - ANS-a. that the
genes are located close together on the same chromosome
The Xist gene product...
a. is never translated into protein
b. is required for the production of Barr bodies
c. coats the X chromosome with RNA
d. associates with proteins to compact the chromosome
e. all of these statements are correct - ANS-e. all of these statements are correct
