Chapter 11 Mastering Biology Exam 2026
Questions and Answers Graded A+
How could the botanist best determine whether the genotype of the green-pod plant
is homozygous or heterozygous? - Correct answer-Cross the green-pod plant with a
yellow-pod plant.
Suppose that the botanist carried out the test cross described in Parts A and B and
determined that the original green-pod plant was heterozygous (Gg). Which of
Mendel's findings does her test cross illustrate? - Correct answer-law of
segregation
During which part of meiosis (meiosis I or meiosis II) do the two alleles of a gene
separate? During which phase does the separation occur? - Correct answer-meiosis
I, Anaphase
Mendel studied pea plants dihybrid for seed shape (round versus wrinkled) and
seed color (yellow versus green). Recall that
the round allele (R) is dominant to the wrinkled allele (r) and
the yellow allele (Y) is dominant to the green allele (y).
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, The table below shows the F1 progeny that result from selfing four different parent
pea plants.
Use the phenotypes of the F1 progeny to deduce the genotype and phenotype of
each parent plant. - Correct answer-Plant 1: green round, Rryy, green round, green
wrinkled
Plant 2: yellow round, RrYy, yellow round, yellow wrinkled, green round, gren
wrinkled
Plant 3: yellow round, RRYy, yellow round, green round
Plant 4: green wrinkled, rryy, green wrinkled
A plant grown from a [round, yellow] seed is crossed with a plant grown from a
[wrinkled, yellow] seed. This cross produces four progeny types in the F1: [round,
yellow], [wrinkled, yellow], [round, green], and [wrinkled, green].
Use this information to deduce the genotypes of the parent plants. - Correct
answer-yellow round = RrYy
yellow wrinkled= rrYy
For the cross in Part B, predict the frequencies of each of the phenotypes in the F1
progeny, and determine the genotype(s) present in each phenotypic class. - Correct
answer-yellow round: 3/8, RrYY, RrYy (x2)
©COPYRIGHT 2026, ALL RIGHTS RESERVED 2
Questions and Answers Graded A+
How could the botanist best determine whether the genotype of the green-pod plant
is homozygous or heterozygous? - Correct answer-Cross the green-pod plant with a
yellow-pod plant.
Suppose that the botanist carried out the test cross described in Parts A and B and
determined that the original green-pod plant was heterozygous (Gg). Which of
Mendel's findings does her test cross illustrate? - Correct answer-law of
segregation
During which part of meiosis (meiosis I or meiosis II) do the two alleles of a gene
separate? During which phase does the separation occur? - Correct answer-meiosis
I, Anaphase
Mendel studied pea plants dihybrid for seed shape (round versus wrinkled) and
seed color (yellow versus green). Recall that
the round allele (R) is dominant to the wrinkled allele (r) and
the yellow allele (Y) is dominant to the green allele (y).
©COPYRIGHT 2026, ALL RIGHTS RESERVED 1
, The table below shows the F1 progeny that result from selfing four different parent
pea plants.
Use the phenotypes of the F1 progeny to deduce the genotype and phenotype of
each parent plant. - Correct answer-Plant 1: green round, Rryy, green round, green
wrinkled
Plant 2: yellow round, RrYy, yellow round, yellow wrinkled, green round, gren
wrinkled
Plant 3: yellow round, RRYy, yellow round, green round
Plant 4: green wrinkled, rryy, green wrinkled
A plant grown from a [round, yellow] seed is crossed with a plant grown from a
[wrinkled, yellow] seed. This cross produces four progeny types in the F1: [round,
yellow], [wrinkled, yellow], [round, green], and [wrinkled, green].
Use this information to deduce the genotypes of the parent plants. - Correct
answer-yellow round = RrYy
yellow wrinkled= rrYy
For the cross in Part B, predict the frequencies of each of the phenotypes in the F1
progeny, and determine the genotype(s) present in each phenotypic class. - Correct
answer-yellow round: 3/8, RrYY, RrYy (x2)
©COPYRIGHT 2026, ALL RIGHTS RESERVED 2
