Question 1

DNA

Accepted Answer

A)  is single stranded.
B)  contains six different nucleotide bases.
C)  is the template for every aspect of an organism.
D)  contains the base uracil. C

Question 2

Chromosome number is reduced during

Accepted Answer

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

Question 3

In order for traits to respond to natural selection

Accepted Answer

A)  they must be acquired prior to gamete production.
B)  they must be heritable.
C)  they must be found in the mitochondrial DNA.
D)  they must be found in cells. B

Question 4

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 5

Nucleotide bases in nuclear DNA include all of the following except

Accepted Answer

A)  thymine.
B)  adenine.
C)  uracil.
D)  cytosine.

Question 6

Discuss homeotic or Hox genes.What purpose do they serve in the genome?

Accepted Answer

The answer of Discuss homeotic or Hox genes.What purpose do...

Question 7

Define polygenic and pleiotropic traits and explain their significance for researchers' efforts to link human genotypes to phenotypes.

Accepted Answer

The answer of Define polygenic and pleiotropic traits and explain...

Question 8

Deoxyribonucleic acid (DNA) differs from ribonucleic acid (RNA) in that

Accepted Answer

A)  it was studied during Darwin's lifetime.
B)  it is the "recipe" for all biological characteristics and functions.
C)  it was discovered by Mendel.
D)  it is stored in ribosomes.

Question 9

What is the evolutionary significance of meiosis?

Accepted Answer

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

Question 10

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 11

________ are organisms lacking any internal compartments.

Accepted Answer

A)  Fungi
B)  Plants
C)  Prokaryotes
D)  Eukaryotes

Question 12

In his work on pea plants, Mendel found that plant height was inherited independently of the type or color of the seed coat.This finding

Accepted Answer

A)  applies to genes on the same chromosome.
B)  applies to the law of independent assortment.
C)  explains gene linkage.
D)  explains inheritance in simple organisms.

Question 13

The presence of a recessive allele

Accepted Answer

A)  can always be determined from the phenotype.
B)  is usually masked in the phenotype.
C)  is expressed in the phenotype alongside a dominant allele.
D)  none of the above.

Question 14

Most human nuclear DNA is coded to produce ________ .

Accepted Answer

A)  amino acids
B)  proteins
C)  RNA
D)  mutations

Question 15

Mitochondrial DNA is

Accepted Answer

A)  contained within the cell's nucleus.
B)  passed from father to son.
C)  passed from mother to offspring.
D)  found only in bacteria.

Question 16

The following are complementary bases in DNA

Accepted Answer

A)  adenine and thymine.
B)  adenine and cytosine.
C)  guanine and thymine.
D)  guanine and uracil.

Question 17

Somatic cells are characterized by all of the following except

Accepted Answer

A)  each includes a nucleus.
B)  they are used in multiple tissues throughout the body.
C)  each contains half a copy of an organism's DNA.
D)  each contains a complete copy of all of an organism's DNA.

Question 18

Microsatellites are

Accepted Answer

A)  small satellite transmitters used in genetic research.
B)  useful for determining group but not individual identification.
C)  highly individualized repetitive stretches of nuclear DNA.
D)  known from Watson and Crick's 1950s research.

Question 19

Proteins consist of

Accepted Answer

A)  genes.
B)  RNA plus mRNA.
C)  chains of DNA nucleotides.
D)  chains of amino acids.

Question 20

DNA replication produces

Accepted Answer

A)  four identical daughter cells.
B)  two identical daughter cells.
C)  two single strands of DNA.
D)  none of the above.

Exam 3: Genetics: Reproducing Life and Producing Variation

DNA