Question 1

Based on his monohybrid crosses,Mendel's proposed which of the following? Check all that apply.

Accepted Answer

A) Alternative forms of a trait are encoded by alternative alleles. 
B) The 2 alleles for a given trait separate when gametes form. 
C) Each allele has an equal probability of being passed on to the gametes. 
D) Allele pairs segregate independently of each other. 
E) Diploid individuals have 2 alleles for each trait. 
A) Alternative forms of a trait are encoded by alternative alleles. 
B) The 2 alleles for a given trait separate when gametes form. 
C) Each allele has an equal probability of being passed on to the gametes. 
D) Allele pairs segregate independently of each other. 
E) Diploid individuals have 2 alleles for each trait.

Question 2

The phenotypic ratio for the F1 generation that results from a testcross between a homozygous recessive individual and a heterozygous individual is

Accepted Answer

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

Question 3

A scientist has an uncharacterized pea plant.She wants to determine the plant's genotype for seed color.In order to be certain that she will get conclusive results from a single cross,with what plant could she cross it? Check all that apply.

Accepted Answer

A) a green-seeded pea plant (yy) 
B) a yellow-seeded pea plant (YY) 
C) itself 
A) a green-seeded pea plant (yy) 
B) a yellow-seeded pea plant (YY) 
C) itself

Question 4

Irene knows her blood type is A,but William does not know his blood type.However,William knows that his mother and father both had blood type B.Irene and William's first child is a boy with type O blood.Based on this information,William's blood type could be

Accepted Answer

A) B only 
B) either B or O 
C) O only 
D) either AB or O 
E) A only 
A) B only 
B) either B or O 
C) O only 
D) either AB or O 
E) A only

Exam 12: Patterns of Inheritance

Based on his monohybrid crosses,Mendel's proposed which of the following? Check all that apply.

The phenotypic ratio for the F1 generation that results from a testcross between a homozygous recessive individual and a heterozygous individual is

A scientist has an uncharacterized pea plant.She wants to determine the plant's genotype for seed color.In order to be certain that she will get conclusive results from a single cross,with what plant could she cross it? Check all that apply.

Irene knows her blood type is A,but William does not know his blood type.However,William knows that his mother and father both had blood type B.Irene and William's first child is a boy with type O blood.Based on this information,William's blood type could be

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The phenotypic ratio for the F₁generation that results from a testcross between a homozygous recessive individual and a heterozygous individual is