Question 1

The expression of polygenic traits is:

Accepted Answer

A)  never determined by the influence of environmental factors.
B)  determined by genes at several loci.
C)  determined by multiple genes at one locus.
D)  determined solely by the influence of environmental factors.

Question 2

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

Question 3

A doctor finds that the mammary glands of a woman are not functioning due to a genetic abnormality that influences the structural design of the thoracic cavity.This is likely the result of a mutation:

Accepted Answer

A)  on the sex chromosomes.
B)  in a Hox gene.
C)  in HSV-1.
D)  none of the above

Question 4

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 5

Transcription:

Accepted Answer

A)  occurs in the nucleus.
B)  occurs in the ribosome.
C)  results in the production of proteins.
D)  results in the transformation of mitochondria.

Question 6

Nucleotide bases in nuclear DNA include all of the following EXCEPT:

Accepted Answer

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

Question 7

Somatic cells are characterized by all of the following EXCEPT:

Accepted Answer

A)  each includes a nucleus at some stage of its development.
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 8

Human ABO blood types are determined by:

Accepted Answer

A)  regulatory genes.
B)  multiple alleles.
C)  multiple genes.
D)  homeotic genes.

Question 9

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)  OO.

Question 10

Hox genes:

Accepted Answer

A)  appear to function in similar ways across diverse groups of organisms.
B)  function only in fruit flies.
C)  control which amino acids get plugged into polypeptide chains.
D)  control the development of language in humans.

Question 11

Transfer RNA:

Accepted Answer

A)  seeks complementary triplet strands of mRNA codons.
B)  contains codons that correspond to specific amino acids.
C)  brings amino acids together to form polypeptide chains.
D)  all of the above

Question 12

In mammals, the male parent's gametes determine the sex of his offspring because:

Accepted Answer

A)  the X chromosome originates only from females.
B)  sperm are more powerful than eggs.
C)  the Y chromosome is present in males only.
D)  the X chromosome determines sex.

Question 13

The gene responsible for lactose persistence among adults in Europe is a _______ gene.

Accepted Answer

A)  structural
B)  dominant
C)  regulatory
D)  Hox

Question 14

Use what you know about meiosis to explain Mendel's law of segregation and law of independent assortment.

Accepted Answer

Although Mendel did not know about chrom...

Question 15

Somatic cells include all of the following EXCEPT:

Accepted Answer

A)  lung cells.
B)  gametes.
C)  skin cells.
D)  neurons.

Question 16

Polymerase chain reaction (PCR) :

Accepted Answer

A)  allows us to use genetic methods to explore the origins and movements of populations.
B)  is used to amplify tiny sequences of DNA for study.
C)  allows us to study small amounts of DNA available in ancient skeletons.
D)  all of the above

Question 17

DNA:

Accepted Answer

A)  is single stranded.
B)  contains six different nucleotide bases.
C)  directs cellular function.
D)  contains the base uracil.

Question 18

If two alleles influencing the expressed phenotype for a trait are equally expressed, this is an example of:

Accepted Answer

A)  polymorphism.
B)  codominance.
C)  pleiotropy.
D)  Mendelian inheritance.

Question 19

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

Accepted Answer

The relationship between most genes and ...

Question 20

In 2004, the Human Genome Project published a human genome map indicating that _______ genes are responsible for the human body's proteins.

Accepted Answer

A)  100,000
B)  50,000
C)  20,000-25,000
D)  200,000-250,000

Exam 3: Genetics: Reproducing Life and Producing Variation

Transcription:

Correct AnswerverifiedShow Answer

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:

Correct AnswerverifiedShow Answer

If two alleles influencing the expressed phenotype for a trait are equally expressed, this is an example of:

Correct AnswerverifiedShow Answer

The expression of polygenic traits is:

Correct AnswerverifiedShow Answer

Hox genes:

Correct AnswerverifiedShow Answer

Human ABO blood types are determined by:

Correct AnswerverifiedShow Answer

In mammals, the male parent's gametes determine the sex of his offspring because:

Correct AnswerverifiedShow Answer

The gene responsible for lactose persistence among adults in Europe is a _______ gene.

Correct AnswerverifiedShow Answer

Polymerase chain reaction (PCR) :

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedThe relationship between most genes and ...View AnswerShow Answer

Somatic cells include all of the following EXCEPT:

Correct AnswerverifiedShow Answer

DNA:

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

In 2004, the Human Genome Project published a human genome map indicating that _______ genes are responsible for the human body's proteins.

Correct AnswerverifiedShow Answer

Somatic cells are characterized by all of the following EXCEPT:

Correct AnswerverifiedShow Answer

Use what you know about meiosis to explain Mendel's law of segregation and law of independent assortment.

Correct AnswerverifiedAlthough Mendel did not know about chrom...View AnswerShow Answer

A doctor finds that the mammary glands of a woman are not functioning due to a genetic abnormality that influences the structural design of the thoracic cavity.This is likely the result of a mutation:

Correct AnswerverifiedShow Answer

Transfer RNA:

Correct AnswerverifiedShow Answer

Nucleotide bases in nuclear DNA include all of the following EXCEPT:

Correct AnswerverifiedShow Answer

The following are complementary bases in DNA:

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The relationship between most genes and ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Although Mendel did not know about chrom...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified