Question 1

ThABO blootypes arexamples of

Accepted Answer

A) multiple alleles and codominance. 
B) pleiotropy. 
C) multiple alleles. 
D) incomplete dominance. 
E) codominance. 
A) multiple alleles and codominance. 
B) pleiotropy. 
C) multiple alleles. 
D) incomplete dominance. 
E) codominance.

Question 2

An individual wouldevelop cystic fibrosis if hcarries __________ mutateCFTR gene(s).

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 3

Which of thfollowing woulNOT bsupporteby indirect evidences of Mendel's dihybricrosses?

Accepted Answer

A) independent assortment 
B) dominance 
C) linkage 
D) presence of two factors in parents and offspring 
E) segregation of factors 
A) independent assortment 
B) dominance 
C) linkage 
D) presence of two factors in parents and offspring 
E) segregation of factors

Question 4

What coulthchildren of a color-blinwoman ana man with a normal vision be?

Accepted Answer

A) All will be color-blind. 
B) None will be color-blind. 
C) Daughters will be color-blind, and sons will be normal. 
D) Sons will be color-blind, and daughters will be normal. 
E) About half would be color-blind. 
A) All will be color-blind. 
B) None will be color-blind. 
C) Daughters will be color-blind, and sons will be normal. 
D) Sons will be color-blind, and daughters will be normal. 
E) About half would be color-blind.

Question 5

Thtypof inheritancthat woulsuggest thconcept of blending is

Accepted Answer

A) multiple alleles. 
B) autosomal dominance. 
C) codominance. 
D) incomplete dominance. 
E) codominance and incomplete dominance. 
A) multiple alleles. 
B) autosomal dominance. 
C) codominance. 
D) incomplete dominance. 
E) codominance and incomplete dominance.

Question 6

Amniocentesis can brequesteby a futurmother between __________ after conception.

Accepted Answer

A) seven and ten weeks 
B) ten and fourteen weeks 
C) fifteen and twenty weeks 
D) seventeen and thirty weeks 
E) twenty and forty weeks 
A) seven and ten weeks 
B) ten and fourteen weeks 
C) fifteen and twenty weeks 
D) seventeen and thirty weeks 
E) twenty and forty weeks

Question 7

Thpea plant was an excellent choicfor Mendel's experiments because

Accepted Answer

A) true-breeding varieties were available. 
B) the plant can self-fertilize. 
C) it can be cross-fertilized. 
D) true-breeding varieties were available, and it can be cross-fertilized. 
E) some pea plants breed true for certain traits. 
A) true-breeding varieties were available. 
B) the plant can self-fertilize. 
C) it can be cross-fertilized. 
D) true-breeding varieties were available, and it can be cross-fertilized. 
E) some pea plants breed true for certain traits.

Question 8

Which of thfollowing might happen in a cystic fibrosis patient?

Accepted Answer

A) mucus sticking to surfaces of epithelia 
B) persistence of infectious bacteria 
C) hyperactivity of the immune system 
D) mucus sticking to surfaces of epithelia and persistence of infectious bacteria in the body 
E) persistence of infectious bacteria and hyperactivity of the immune system 
A) mucus sticking to surfaces of epithelia 
B) persistence of infectious bacteria 
C) hyperactivity of the immune system 
D) mucus sticking to surfaces of epithelia and persistence of infectious bacteria in the body 
E) persistence of infectious bacteria and hyperactivity of the immune system

Question 9

If a study of several pedigrees demonstratethat two parents express a characteristic annonof their children express it, then thtrait is controlleby

Accepted Answer

A) a codominant gene. 
B) a simple dominant gene. 
C) a recessive gene. 
D) a sex-linked gene. 
E) none of these; no conclusion can be drawn. 
A) a codominant gene. 
B) a simple dominant gene. 
C) a recessive gene. 
D) a sex-linked gene. 
E) none of these; no conclusion can be drawn.

Question 10

Genetic recombination as a result of crossing over occurs morreadily in genes

Accepted Answer

A) that are on the sex chromosomes. 
B) that are on the autosomes. 
C) that are located close together on the same chromosome. 
D) that are located far apart on the same chromosome. 
E) that are located on different chromosomes. 
A) that are on the sex chromosomes. 
B) that are on the autosomes. 
C) that are located close together on the same chromosome. 
D) that are located far apart on the same chromosome. 
E) that are located on different chromosomes.

Question 11

A(n) __________ is an offspring of a cross between two individuals that breetrufor different forms of a trait.

Accepted Answer

A) homozygous 
B) autosome 
C) hybrid 
D) diploid 
E) haploid 
A) homozygous 
B) autosome 
C) hybrid 
D) diploid 
E) haploid

Question 12

In genetic analyses, researchers know that linkagof genes will introducexceptions to thprinciplof

Accepted Answer

A) dominance. 
B) segregation. 
C) recessiveness. 
D) independent assortment. 
E) chromosome inheritance. 
A) dominance. 
B) segregation. 
C) recessiveness. 
D) independent assortment. 
E) chromosome inheritance.

Question 13

If a pure-breeding long-tail cat (LL) is crossewith a pure-breeding cat with no tail (rumpy, ll), ana cat with a short tail (stumpy) is produced, thsimplest explanation is

Accepted Answer

A) a mutation. 
B) an X-linked gene. 
C) an incompletely dominant gene. 
D) a lethal gene. 
E) chromosomal aberration. 
A) a mutation. 
B) an X-linked gene. 
C) an incompletely dominant gene. 
D) a lethal gene. 
E) chromosomal aberration.

Question 14

Short hair (L) is dominant to long hair (l); to determinthgenotypof a short-haireanimal, it shoulbcrossewith

Accepted Answer

A) LL. 
B) Ll. 
C) ll. 
D) all of these. 
E) none of these. 
A) LL. 
B) Ll. 
C) ll. 
D) all of these. 
E) none of these.

Question 15

Which of thfollowing is NOT a known effect in thexpression of Marfan syndrome?

Accepted Answer

A) skeleton lacks elasticity 
B) weakened blood vessels 
C) weakened aorta 
D) excessive absorption of oxygen causing the blood to cells to swell 
E) altered fibrillin 
A) skeleton lacks elasticity 
B) weakened blood vessels 
C) weakened aorta 
D) excessive absorption of oxygen causing the blood to cells to swell 
E) altered fibrillin

Question 16

Hemophilia

Accepted Answer

A) is rare in the human population. 
B) is more common among men. 
C) was common in English royalty. 
D) is an X-linked recessive trait. 
E) is true of all of these. 
A) is rare in the human population. 
B) is more common among men. 
C) was common in English royalty. 
D) is an X-linked recessive trait. 
E) is true of all of these.

Question 17

Four of thfivanswers listebelow artherapeutic measures applieto affecteindividuals.Select thEXCEPTION.

Accepted Answer

A) prenatal diagnosis 
B) chemotherapy 
C) surgical correction 
D) diet modification 
E) environmental adjustment 
A) prenatal diagnosis 
B) chemotherapy 
C) surgical correction 
D) diet modification 
E) environmental adjustment

Question 18

If all offspring of a cross havthgenotypAa, thparent of thcross woulmost likely be

Accepted Answer

A) AA x aa. 
B) Aa x Aa. 
C) Aa x aa. 
D) AA x Aa. 
E) none of these. 
A) AA x aa. 
B) Aa x Aa. 
C) Aa x aa. 
D) AA x Aa. 
E) none of these.

Question 19

In Down syndrome,

Accepted Answer

A) as the age of the mother increases, the chance of the defect occurring in the unborn children increases. 
B) the father seems to have very little influence on the defect. 
C) most embryos abort before complete term. 
D) a person with the defect cannot have a normal child. 
E) none of these are true. 
A) as the age of the mother increases, the chance of the defect occurring in the unborn children increases. 
B) the father seems to have very little influence on the defect. 
C) most embryos abort before complete term. 
D) a person with the defect cannot have a normal child. 
E) none of these are true.

Question 20

Treatments for genetic disorders currently include

Accepted Answer

A) substituting normal for defective parents. 
B) substituting normal for defective genes. 
C) supplying a missing gene. 
D) supplying missing enzymes. 
E) all of these. 
A) substituting normal for defective parents. 
B) substituting normal for defective genes. 
C) supplying a missing gene. 
D) supplying missing enzymes. 
E) all of these.

Exam 9: Patterns of Inheritance

ThABO blootypes arexamples of

An individual wouldevelop cystic fibrosis if hcarries __________ mutateCFTR gene(s).

Which of thfollowing woulNOT bsupporteby indirect evidences of Mendel's dihybricrosses?

What coulthchildren of a color-blinwoman ana man with a normal vision be?

Thtypof inheritancthat woulsuggest thconcept of blending is

Amniocentesis can brequesteby a futurmother between __________ after conception.

Thpea plant was an excellent choicfor Mendel's experiments because

Which of thfollowing might happen in a cystic fibrosis patient?

If a study of several pedigrees demonstratethat two parents express a characteristic annonof their children express it, then thtrait is controlleby

Genetic recombination as a result of crossing over occurs morreadily in genes

A(n) __________ is an offspring of a cross between two individuals that breetrufor different forms of a trait.

In genetic analyses, researchers know that linkagof genes will introducexceptions to thprinciplof

If a pure-breeding long-tail cat (LL) is crossewith a pure-breeding cat with no tail (rumpy, ll), ana cat with a short tail (stumpy) is produced, thsimplest explanation is

Short hair (L) is dominant to long hair (l); to determinthgenotypof a short-haireanimal, it shoulbcrossewith

Which of thfollowing is NOT a known effect in thexpression of Marfan syndrome?

Hemophilia

Four of thfivanswers listebelow artherapeutic measures applieto affecteindividuals.Select thEXCEPTION.

If all offspring of a cross havthgenotypAa, thparent of thcross woulmost likely be

In Down syndrome,

Treatments for genetic disorders currently include

Invitation to Biology

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