Question 1

Consider a homologous pair of chromosomes with the genotype Aa at one locus and the genotype Bb at another locus. After undergoing meiosis, what are all of the possible genotypes of the gametes produced?

Accepted Answer

The likely genotypes of the gametes will...

Question 2

The organelles that splice the mRNA in eukaryotes after the introns have been snipped out are called

Accepted Answer

A)   splitosomes.
B)   ribosomes.
C)   spliceosomes.
D)   Golgi bodies.E) A) and B)
F) C) and D)

Question 3

If you have two parents with the genotype Aa, what is the chance that they will have an offspring with the genotype AA?

Accepted Answer

A)   1/8
B)   1/2
C)   1/4
D)   1/16E) C) and D)
F) B) and D)

Question 4

Some biologists hypothesize that introns are maintained in eukaryotes because their population sizes are much smaller than in prokaryotes. ________ is the random, nonadaptive evolutionary process that explains this phenomenon.

Accepted Answer

A)   Genetic drift
B)   Natural selection
C)   Protein synthesis
D)   TranscriptionE) A) and B)
F) A) and C)

Question 5

When Mendel crossed true-breeding plants bearing yellow seeds with true-breeding plants bearing green seeds, what was the phenotypic ratio among the offspring?

Accepted Answer

A)   All aa individuals
B)   All AA individuals
C)   Half yellow and half green individuals
D)   All yellow individualsE) A) and B)
F) A) and C)

Question 6

Compare and contrast mitosis and meiosis. Include in your discussion for each process (a) the number of daughter cells produced and (b) the number of chromosomes each new cell contains. What are recombination and crossing over, and why are they important in the study of evolution?

Accepted Answer

Mitosis occurs in somatic or body cells,...

Question 7

The law of independent segregation states that

Accepted Answer

A)   the fact that a gamete has an A rather than an a allele does not influence the probability that it will have a B rather than a b allele.
B)   alleles on different chromosomes do not influence each other as they assort into gametes.
C)   dominant alleles act independently of recessive alleles.
D)   both a and b are correct.E) A) and C)
F) None of the above

Question 8

In diploid organisms

Accepted Answer

A)   chromosomes occur in homologous pairs.
B)   chromosomes occur in homologous triplets.
C)   meiosis produces diploid gametes.
D)   mitosis produces haploid cells.E) All of the above
F) A) and B)

Question 9

Sickle-cell anemia

Accepted Answer

A)   is on the decline.
B)   is caused by the change in two amino acids that make up the hemoglobin molecule.
C)   results when hemoglobin molecules do not fold correctly, reducing their ability to bind to oxygen.
D)   increases an individual's susceptibility to malaria.E) C) and D)
F) B) and D)

Question 10

As DNA codes for proteins, it can be interrupted by noncoding sequences called

Accepted Answer

A)   organelles.
B)   proteins.
C)   introns.
D)   synthetases.E) None of the above
F) A) and B)

Exam 2: Genetics

Consider a homologous pair of chromosomes with the genotype Aa at one locus and the genotype Bb at another locus. After undergoing meiosis, what are all of the possible genotypes of the gametes produced?

Correct Answer
verified
The likely genotypes of the gametes will...
View Answer

The organelles that splice the mRNA in eukaryotes after the introns have been snipped out are called

Correct Answer
verified

Compare and contrast mitosis and meiosis. Include in your discussion for each process (a) the number of daughter cells produced and (b) the number of chromosomes each new cell contains. What are recombination and crossing over, and why are they important in the study of evolution?

Correct Answer
verified
Mitosis occurs in somatic or body cells,...
View Answer

The law of independent segregation states that

Correct Answer
verified

Some biologists hypothesize that introns are maintained in eukaryotes because their population sizes are much smaller than in prokaryotes. ________ is the random, nonadaptive evolutionary process that explains this phenomenon.

Correct Answer
verified

Sickle-cell anemia

Correct Answer
verified

As DNA codes for proteins, it can be interrupted by noncoding sequences called

Correct Answer
verified

If you have two parents with the genotype Aa, what is the chance that they will have an offspring with the genotype AA?

Correct Answer
verified

When Mendel crossed true-breeding plants bearing yellow seeds with true-breeding plants bearing green seeds, what was the phenotypic ratio among the offspring?

Correct Answer
verified

In diploid organisms

Correct Answer
verified

Exam 2: Genetics

Consider a homologous pair of chromosomes with the genotype Aa at one locus and the genotype Bb at another locus. After undergoing meiosis, what are all of the possible genotypes of the gametes produced?

Correct AnswerverifiedThe likely genotypes of the gametes will...View AnswerShow Answer

The organelles that splice the mRNA in eukaryotes after the introns have been snipped out are called

Correct AnswerverifiedShow Answer

Compare and contrast mitosis and meiosis. Include in your discussion for each process (a) the number of daughter cells produced and (b) the number of chromosomes each new cell contains. What are recombination and crossing over, and why are they important in the study of evolution?

Correct AnswerverifiedMitosis occurs in somatic or body cells,...View AnswerShow Answer

The law of independent segregation states that

Correct AnswerverifiedShow Answer

Some biologists hypothesize that introns are maintained in eukaryotes because their population sizes are much smaller than in prokaryotes. ________ is the random, nonadaptive evolutionary process that explains this phenomenon.

Correct AnswerverifiedShow Answer

Sickle-cell anemia

Correct AnswerverifiedShow Answer

As DNA codes for proteins, it can be interrupted by noncoding sequences called

Correct AnswerverifiedShow Answer

If you have two parents with the genotype Aa, what is the chance that they will have an offspring with the genotype AA?

Correct AnswerverifiedShow Answer

When Mendel crossed true-breeding plants bearing yellow seeds with true-breeding plants bearing green seeds, what was the phenotypic ratio among the offspring?

Correct AnswerverifiedShow Answer

In diploid organisms

Correct AnswerverifiedShow Answer

Correct Answer
verified
The likely genotypes of the gametes will...
View Answer

Correct Answer
verified

Correct Answer
verified
Mitosis occurs in somatic or body cells,...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified