Probability of Inheritance Answers

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1
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Which describes the notation Tt for the trait of plant height?

A
homozygous genotype
B
heterozygous genotype
C
homozygous phenotype
D
heterozygous phenotype
2
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There are two different alleles for flower color, P and p. The image shows a white sweet pea with a genotypeo of pp.What can you surmise from the labeled image?

Question illustration
A
The genotype is heterozygous.
B
White petal color is a recessive trait.
C
White petal color is a dominant trait.
D
The phenotype is heterozygous.
3

The offspring of a particular cross are 100 percent heterozygous for the trait of plant height. What were the most likely genotypes of the parents?

A
Tt ´ tt
B
Tt ´ Tt
C
tt ´ tt
D
TT ´ tt
4

What is one of the reasons why Gregor Mendel chose to study pea plants?

A
They exhibit only a single trait.
B
They produce flowers.
C
They grow very slowly.
D
They reproduce sexually.
5

A plant can produce either purple flowers or white flowers. The purple flower color is dominant over the white flower color. What is the ratio of the offspring with purple flowers to the total number of offspring if two plants that are heterozygous for purple flowers are crossed?

A
1:4
B
2:4
C
3:4
D
4:4
6

Why did Gregor Mendel choose to use purebred plants in his experiments?

A
They reproduce sexually.
B
They exhibit only one form of a trait.
C
They have a variety of traits.
D
They reproduce asexually.
7

Which describes the mating of organisms that have different homozygous alleles for a single trait?

A
monohybrid cross
B
dihybrid cross
C
homozygous cross
D
heterozygous cross
8

The Punnett square predicts the ratio of genotypes in the offspring, based on the genotypes of the parents. In this cross, tallness (H) is dominant to shortness (h).Based on the Punnett square, what is the phenotype of the offspring?

Question illustration
A
Hh
B
HH
C
tall
D
short
9

Purple flowers are dominant over white flowers. A heterozygous purple flower is crossed with another heterozygous purple flower. What will the ratio of purple to white be?

A
3:1
B
1:3
C
2:2
D
4:0
10

Which term describes an organism that has identical alleles for a trait?

A
homozygous
B
heterozygous
C
dominant
D
recessive

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