Question 1

What is the relationship between recombination frequency and the actual physical distance on a chromosome?

Accepted Answer

A)   As physical distance increases, the recombination frequency increases in a linear fashion.
B)   As physical distance increases, the recombination frequency decreases in a linear fashion.
C)   As physical distance increases, the recombination frequency first increases in a linear fashion, but gradually levels off to a frequency of 0.5.
D)   As physical distance increases, the recombination frequency first increases, but then decreases.E) A) and B)
F) A) and C)

Question 2

Assuming no chromosomal aneuploidies, a calico cat would be which gender?

Accepted Answer

A)   Female
B)   Male
C)   Cannot be determinedD) B) and C)
E) A) and B)

Question 3

You are performing an experiment to study replication of DNA on a specific yeast chromosome. Yeast cells were synchronized in G1 and were released into S phase. DNA was recovered every five minutes after release into S phase, and an analysis was done to look for DNA replication in specific regions of the yeast chromosome. Assume that these regions of the yeast chromosome are adjacent to each other in the following order: Region A, Region B, Region C, Region D. The data below indicate the times during which DNA replication was observed in each of these regions. Using these data, which region or regions of the yeast chromosome most likely contained an origin of replication?
Times When DNA Replication Was Observed in Each Region:
Region A: 40 minutes, 45 minutes, and 50 minutes
Region B: 35 minutes, 40 minutes and 45 minutes
Region C: 30 minutes, 35 minutes, and 40 minutes
Region D: 35 minutes, 40 minutes, and 45 minutes

Accepted Answer

A)   Region A
B)   Region B
C)   Region C
D)   Region D
E)   Regions A, B, C and DF) A) and C)
G) C) and D)

Question 4

In some species, sex determination is influenced by environmental temperature during development. If you wanted to determine the temperature at which one would obtain a 1:1 sex ratio in a particular species of turtle, which of the following experiments would best address this question?

Accepted Answer

A)   Grow the turtles in two different incubators at temperatures of 22ºC and 30ºC.
B)   Grow the turtles in three different incubators at temperatures of 26ºC, 28ºC, and 30ºC.
C)   Grow the turtles in four different incubators at temperatures of 24ºC, 26ºC, 28ºC, and 30ºC.
D)   Grow the turtles in five different incubators at temperatures of 22ºC, 24ºC, 26ºC, 28ºC, and 30ºC.E) B) and D)
F) A) and C)

Question 5

At an autosomal gene locus in humans, the allele for brown eyes is dominant over the allele for blue eyes. At another gene locus, located on the X chromosome, a recessive allele produces colorblindness while the dominant allele produces normal color vision. A heterozygous brown-eyed woman who is a carrier of colorblindness marries a blue-eyed man who is not colorblind. The woman becomes pregnant and an ultrasound test shows that the child is a girl. What is the probability that she will be colorblind? (Enter the probability as a percent. Enter the number only without the percent sign. For example, enter 100% as 100 and enter 12.5% as 12.5)

Accepted Answer

The answer of At an autosomal gene locus in humans,...

Exam 12: The Chromosomal Basis of Inheritance and DNA: The Genetic Material

What is the relationship between recombination frequency and the actual physical distance on a chromosome?

Correct Answer
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Correct Answer
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In some species, sex determination is influenced by environmental temperature during development. If you wanted to determine the temperature at which one would obtain a 1:1 sex ratio in a particular species of turtle, which of the following experiments would best address this question?

Correct Answer
verified

Assuming no chromosomal aneuploidies, a calico cat would be which gender?

Correct Answer
verified

Correct Answer
verified

Exam 12: The Chromosomal Basis of Inheritance and DNA: The Genetic Material

What is the relationship between recombination frequency and the actual physical distance on a chromosome?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In some species, sex determination is influenced by environmental temperature during development. If you wanted to determine the temperature at which one would obtain a 1:1 sex ratio in a particular species of turtle, which of the following experiments would best address this question?

Correct AnswerverifiedShow Answer

Assuming no chromosomal aneuploidies, a calico cat would be which gender?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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