Question 1

If the heterozygous phenotype is intermediate between the homozygotes,this is called

Accepted Answer

A)  codominance.
B)  independent assortment.
C)  linkage.
D)  incomplete dominance.
E)  polygenic.

Question 2

On a diagram of linked genes on a chromosome,the distance between the genes would be based on thefrequency of crossing over between the genes during meiosis.

Accepted Answer

A) True 
 B)False

Question 3

In the ABO blood type system the alleles IA,IB,and i produce

Accepted Answer

A)  three phenotypes.
B)  two phenotypes.
C)  one phenotype.
D)  four phenotypes.
E)  type A and type B blood types only.

Question 4

The individual sometimes referred to as the "father of genetics" because he influenced the science of genetics more than anyone else is Gregor Mendel.

Accepted Answer

A) True 
 B)False

Question 5

Genotype means

Accepted Answer

A)  the number of gametes in an individual.
B)  the combination of alleles in an individual.
C)  the number of chromosomes in an individual.
D)  the observable expression of the genes in an individual.
E)  the genes an individual has.

Question 6

A dihybrid cross is a mating between two individuals that are each ______________ for ___________ gene(s) .

Accepted Answer

A)  homozygous,one
B)  homozygous,two
C)  homologous,two
D)  heterozygous,one
E)  heterozygous,two

Question 7

To inherit an autosomal dominant disorder a person could receive the disease causing allele from

Accepted Answer

A)  the father only,not the mother.
B)  the mother only,not the father.
C)  the mother or the father.
D)  the parent who does not exhibit the disease.
E)  All answers are correct.

Question 8

In the ABO blood type system,the IA allele is _____ with the IB allele.

Accepted Answer

A)  dominant
B)  codominant
C)  recessive
D)  homologous
E)  heterologous

Question 9

If you cross two pea plants,one with green peas and the other with yellow peas,and all of the offspring have yellow peas,you conclude

Accepted Answer

A)  the yellow parent was homozygous for the recessive allele.
B)  the yellow parent was homozygous for the dominant gene.
C)  the yellow parent was homozygous for the dominant allele.
D)  the yellow parent was homozygous for the recessive gene.
E)  the yellow parent was heterozygous.

Question 10

If you cross RrYy and RRyy pea plants,what fraction of the offspring will have round peas? R=round,r=wrinkled,Y=yellow,y=green

Accepted Answer

A)  50%
B)  75%
C)  100%
D)  25%
E)  0%

Question 11

A dihybrid cross of linked genes theoretically gives a phenotypic ratio of

Accepted Answer

A)  9:3:3:1.
B)  2:1.
C)  3:1.
D)  1:1.
E)  1:1:1:1.

Question 12

Recombinant chromosomes have a mix of paternal and maternal alleles due to

Accepted Answer

A)  random fertilization.
B)  linkage.
C)  independent assortment.
D)  crossing over.
E)  mutation.

Question 13

If you cross two heterozygous Yy pea plants,what proportion of the offspring will be the dominant color yellow?

Accepted Answer

A)  50%
B)  75%
C)  25%
D)  0%
E)  100%

Question 14

If two genes are linked,they will appear to violate Mendel's law of segregation.

Accepted Answer

A) True 
 B)False

Question 15

Traits that depend on more than one gene are

Accepted Answer

A)  polygenic.
B)  pleiotropic.
C)  codominant.
D)  recessive.
E)  incomplete dominant traits.

Question 16

A gene that produces a protein important in more than one biochemical pathway is

Accepted Answer

A)  dominant.
B)  recessive.
C)  pleiotropiC.
D)  codominant.
E)  incomplete dominant.

Question 17

In pedigree charts,autosomal recessive disorders typically

Accepted Answer

A)  appear in every generation.
B)  appear only in males.
C)  appear only in females.
D)  seem to disappear in one generation,only to reappear in the next generation.
E)  occur every third generation.

Question 18

Mendel's monohybrid cross of tall parents with the genotype Tt resulted in a tall to short ratio of

Accepted Answer

A)  1:1.
B)  1:2.
C)  2:1.
D)  3:1.
E)  1:3.

Question 19

In pedigree charts,autosomal dominant disorders typically

Accepted Answer

A)  appear only in males.
B)  appear only in females.
C)  appear in every generation.
D)  seem to disappear in one generation,only to reappear in the next generation.
E)  occur every third generation.

Question 20

In the study of genetics the offspring of the P generation is referred to as the

Accepted Answer

A)  wild type generation.
B)  F1 generation.
C)  genotype.
D)  F2 generation.
E)  phenotypE.

Exam 10: Patterns of Inheritance

A dihybrid cross of linked genes theoretically gives a phenotypic ratio of

Correct AnswerverifiedShow Answer

Genotype means

Correct AnswerverifiedShow Answer

If the heterozygous phenotype is intermediate between the homozygotes,this is called

Correct AnswerverifiedShow Answer

In pedigree charts,autosomal recessive disorders typically

Correct AnswerverifiedShow Answer

A dihybrid cross is a mating between two individuals that are each ______________ for ___________ gene(s) .

Correct AnswerverifiedShow Answer

If two genes are linked,they will appear to violate Mendel's law of segregation.

Correct AnswerverifiedShow Answer

A gene that produces a protein important in more than one biochemical pathway is

Correct AnswerverifiedShow Answer

To inherit an autosomal dominant disorder a person could receive the disease causing allele from

Correct AnswerverifiedShow Answer

The individual sometimes referred to as the "father of genetics" because he influenced the science of genetics more than anyone else is Gregor Mendel.

Correct AnswerverifiedShow Answer

Recombinant chromosomes have a mix of paternal and maternal alleles due to

Correct AnswerverifiedShow Answer

Traits that depend on more than one gene are

Correct AnswerverifiedShow Answer

In the ABO blood type system,the IA allele is _____ with the IB allele.

Correct AnswerverifiedShow Answer

On a diagram of linked genes on a chromosome,the distance between the genes would be based on thefrequency of crossing over between the genes during meiosis.

Correct AnswerverifiedShow Answer

If you cross RrYy and RRyy pea plants,what fraction of the offspring will have round peas? R=round,r=wrinkled,Y=yellow,y=green

Correct AnswerverifiedShow Answer

In the study of genetics the offspring of the P generation is referred to as the

Correct AnswerverifiedShow Answer

Mendel's monohybrid cross of tall parents with the genotype Tt resulted in a tall to short ratio of

Correct AnswerverifiedShow Answer

In pedigree charts,autosomal dominant disorders typically

Correct AnswerverifiedShow Answer

If you cross two pea plants,one with green peas and the other with yellow peas,and all of the offspring have yellow peas,you conclude

Correct AnswerverifiedShow Answer

If you cross two heterozygous Yy pea plants,what proportion of the offspring will be the dominant color yellow?

Correct AnswerverifiedShow Answer

In the ABO blood type system the alleles IA,IB,and i produce

Correct AnswerverifiedShow Answer

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A dihybrid cross is a mating between two individuals that are each ____ for _ gene(s) .

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In the ABO blood type system,the I^A allele is _____ with the I^B allele.

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In the ABO blood type system the alleles I^A,I^B,and i produce

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