Question 1

RNA differs from DNA in that it uses:

Accepted Answer

A)  uracil instead of adenine.
B)  uracil instead of guanine.
C)  guanine instead of uracil.
D)  uracil instead of thymine. D

Question 2

Individuals whose blood type is A and who carry both dominant and recessive genes at this locus have a genotype of:

Accepted Answer

A)  AA.
B)  AO.
C)  AB.
D)  none of the above B

Question 3

Down syndrome can occur:

Accepted Answer

A)  as a result of translocation during mitosis.
B)  because of nondisjunction,which yields an extra chromosome.
C)  most frequently in the offspring of women under the age of 40.
D)  all of the above B

Question 4

Describe the steps involved in protein synthesis.

Accepted Answer

The answer of Describe the steps involved in protein synthesis....

Question 5

Haplotypes are:

Accepted Answer

A)  not likely to recombine during crossovers.
B)  likely to recombine during crossovers.
C)  genes that code for similar things.
D)  genetic material that comes from one parent only.

Question 6

A human karyotype contains 23 autosomal chromosome pairs and one pair of sex chromosomes.

Accepted Answer

A) True 
 B)False

Question 7

DNA replication takes place only during the production of new gametes.

Accepted Answer

A) True 
 B)False

Question 8

The complete set of genes in an individual cell is called the genome.

Accepted Answer

A) True 
 B)False

Question 9

An individual that is homozygous at the locus that determines ABO blood type may have any of the following EXCEPT:

Accepted Answer

A)  type AB blood.
B)  type O blood.
C)  type A blood.
D)  type B blood.

Question 10

Chromosome number is reduced during:

Accepted Answer

A)  mitosis.
B)  recombination.
C)  translation.
D)  meiosis.

Question 11

Mitochondrial DNA is contained within the cell's nucleus.

Accepted Answer

A) True 
 B)False

Question 12

DNA is important for protein synthesis because:

Accepted Answer

A)  it is biological code for the production of hormones and enzymes.
B)  it serves as a template for protein production.
C)  it provides the code to produce structural proteins.
D)  all of the above

Question 13

Most human nuclear DNA is coded to produce proteins.

Accepted Answer

A) True 
 B)False

Question 14

____________ DNA is heteroplasmic,meaning it can differ among different parts of a person's body.

Accepted Answer

A)  Nuclear
B)  All
C)  Ribosomal
D)  Mitochondrial

Question 15

What is the evolutionary significance of meiosis?

Accepted Answer

The answer of What is the evolutionary significance of meiosis?...

Question 16

Eukaryotes are single-celled organisms.

Accepted Answer

A) True 
 B)False

Question 17

Human ABO blood types are:

Accepted Answer

A)  determined by regulatory genes.
B)  controlled by multiple alleles.
C)  controlled by multiple genes.
D)  none of the above

Question 18

Genetic analysis of haplotypes and variants among living and pre contact Native Americans indicates that:

Accepted Answer

A)  Native Americans underwent a huge decline in genetic diversity after Columbus's arrival in the New World.
B)  Native Americans living today appear to be as diverse genetically as their ancient ancestors thousands of years ago.
C)  the genetic structure and haplogroups of Native Americans are quite recent.
D)  none of the above

Question 19

Marfan's syndrome is an inherited disorder of the regulatory genes that control connective tissue.The disorder leads to long,thin extremities.

Accepted Answer

A) True 
 B)False

Question 20

Baboons are commonly used in biomedical research.Which of the following is a major contribution to the Human Genome Project that has resulted from baboon research?

Accepted Answer

A)  Baboons provide a model for HIV.
B)  Baboons provide a model for osteoarthritis.
C)  Baboons provide a model for understanding human obesity.
D)  Baboons provide a model for osteoporosis.

Exam 3: Genetics: Reproducing Life and Producing Variation

RNA differs from DNA in that it uses:

Individuals whose blood type is A and who carry both dominant and recessive genes at this locus have a genotype of:

Down syndrome can occur:

Describe the steps involved in protein synthesis.

Haplotypes are:

A human karyotype contains 23 autosomal chromosome pairs and one pair of sex chromosomes.

DNA replication takes place only during the production of new gametes.

The complete set of genes in an individual cell is called the genome.

An individual that is homozygous at the locus that determines ABO blood type may have any of the following EXCEPT:

Chromosome number is reduced during:

Mitochondrial DNA is contained within the cell's nucleus.

DNA is important for protein synthesis because:

Most human nuclear DNA is coded to produce proteins.

____________ DNA is heteroplasmic,meaning it can differ among different parts of a person's body.

What is the evolutionary significance of meiosis?

Eukaryotes are single-celled organisms.

Human ABO blood types are:

Genetic analysis of haplotypes and variants among living and pre contact Native Americans indicates that:

Marfan's syndrome is an inherited disorder of the regulatory genes that control connective tissue.The disorder leads to long,thin extremities.

Baboons are commonly used in biomedical research.Which of the following is a major contribution to the Human Genome Project that has resulted from baboon research?