Question 1

Why did Mendel continue some of his experiments to the F2 or F3 generation?

Accepted Answer

A)   to obtain a larger number of offspring on which to base statistics
B)   to observe whether or not a recessive trait would reappear
C)   to observe whether or not the dominant trait would reappear
D)   to distinguish which alleles were segregating
E)   to be able to describe the frequency of recombination

Question 2

Use the following information to answer the questions below.
A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Rh positive is a trait that shows simple dominance over Rh negative and is designated by the alleles R and r, respectively. A third gene for the MN blood group has codominant alleles M and N.
-Which of the following is a possible phenotype for the father?

Accepted Answer

A)   A negative
B)   O negative
C)   B positive
D)   AB negative
E)   impossible to determine

Question 3

What was the most significant conclusion that Gregor Mendel drew from his experiments with pea plants?

Accepted Answer

A)   There is considerable genetic variation in garden peas.
B)   Traits are inherited in discrete units, and are not the results of "blending."
C)   Recessive genes occur more frequently in the F1 generation than do dominant ones.
D)   Genes are composed of DNA.
E)   An organism that is homozygous for many recessive traits is at a disadvantage.

Question 4

Refer to the following information to answer the questions below.
Humanoids on the newly explored planet Brin (in a hypothetical galaxy in ~50 years from the present)  have a gene structure similar to our own, but many very different plants and animals.
-One species of a small birdlike animal has an extremely variable tail length, an example of polygenic inheritance. Geneticists have come to realize that there are eight separate genes for tail length per haploid genome, with each gene having two alleles. One allele for each gene (a1, b1, and so on)  increases the length by 1 cm, whereas the other allele (a2, b2, and so on)  increases it by 0.5 cm. One bird was analyzed and found to have the following genotype: a1a1b2b2c1c2d1d2e2e2f1f2g1g1h1h2
What is the length of its tail?

Accepted Answer

A)   6 cm
B)   8 cm
C)   12 cm
D)   24 cm
E)   36 cm

Question 5

Use the following information to answer the questions below.
Skin color in a certain species of fish is inherited via a single gene with four different alleles.
-How many different types of gametes would be possible in this system?

Accepted Answer

A)   1
B)   2
C)   4
D)   8
E)   16

Exam 11: Mendel and the Gene Idea

Why did Mendel continue some of his experiments to the F2 or F3 generation?

Correct Answer
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Correct Answer
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Use the following information to answer the questions below. Skin color in a certain species of fish is inherited via a single gene with four different alleles. -How many different types of gametes would be possible in this system?

Correct Answer
verified

What was the most significant conclusion that Gregor Mendel drew from his experiments with pea plants?

Correct Answer
verified

Correct Answer
verified

Exam 11: Mendel and the Gene Idea

Why did Mendel continue some of his experiments to the F2 or F3 generation?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Use the following information to answer the questions below. Skin color in a certain species of fish is inherited via a single gene with four different alleles. -How many different types of gametes would be possible in this system?

Correct AnswerverifiedShow Answer

What was the most significant conclusion that Gregor Mendel drew from his experiments with pea plants?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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