AnswersFL-2000310-Biology 1 Sem 1 - FlexLaws of Inheritance

Probability of Inheritance Answers

10 verified answers1 views
1
Free Preview

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.
2
Free Preview

Mendel crossed two plants that were heterozygous for the trait of flower color. Which genotypes could he have used to represent the cross?

A
PP ´ PP
B
Pp ´ Pp
C
pp ´ pp
D
Pp ´ PP
3

In pea plants, tallness (T) is dominant to shortness (t). What are the predicted percentages of the genotypes of the offspring if a homozygous short plant is crossed with a heterozygous tall plant?

A
25 percent Tt, 75 percent tt
B
25 percent tall, 75 percent short
C
50 percent Tt, 50 percent tt
D
50 percent tall, 50 percent short
4

There are two different alleles for flower color, P and p. The image shows a purple sweet pea that is labeled with its two alleles for petal color.Which is the genotype of the sweet pea?

Question illustration
A
heterozygous dominant
B
heterozygous recessive
C
homozygous dominant
D
homozygous recessive
5

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
6

Which includes the physical characteristics of an organism?

A
gene
B
allele
C
genotype
D
phenotype
7

Gregor Mendel crossed homozygous tall plants (TT) with homozygous short plants (tt). All the resulting offspring were tall. From these results, what conclusion did Mendel draw?

A
Tallness is a dominant trait.
B
The word homozygous always means dominant.
C
Only dominant alleles are passed on to offspring.
D
The alleles of the offspring were recessive.
8

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
9

The Punnett square predicts the ratio of genotypes in the offspring, based on the genotypes of the parents. The Punnett square below examines the chance of offspring having freckles, which is a dominant trait.Based on the Punnett square, what is the probability that the offspring will have freckles?

Question illustration
A
25 percent
B
50 percent
C
75 percent
D
100 percent
10

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.
11

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
12

Gregor Mendel crossed homozygous tall plants (TT) with homozygous short plants (tt). All the resulting offspring were tall. From these results, what conclusion did Mendel draw?

A
Tallness is a dominant trait.
B
The word homozygous always means dominant.
C
Only dominant alleles are passed on to offspring.
D
The alleles of the offspring were recessive.
13

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

A
homozygous genotype
B
heterozygous genotype
C
homozygous phenotype
D
heterozygous phenotype
14

There are two different alleles for flower color, P and p. The image shows a purple sweet pea that is labeled with its two alleles for petal color.Which is the genotype of the sweet pea?

Question illustration
A
heterozygous dominant
B
heterozygous recessive
C
homozygous dominant
D
homozygous recessive
15

The Punnett square predicts the ratio of genotypes in the offspring, based on the genotypes of the parents. The Punnett square below examines the chance of offspring having freckles, which is a dominant trait.Based on the Punnett square, what is the probability that the offspring will have freckles?

Question illustration
A
25 percent
B
50 percent
C
75 percent
D
100 percent
16

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

A
homozygous
B
heterozygous
C
dominant
D
recessive
17

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
18

In pea plants, tallness (T) is dominant to shortness (t). What are the predicted percentages of the genotypes of the offspring if a homozygous short plant is crossed with a heterozygous tall plant?

A
25 percent Tt, 75 percent tt
B
25 percent tall, 75 percent short
C
50 percent Tt, 50 percent tt
D
50 percent tall, 50 percent short
19

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.
20

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.

Did you find these answers helpful?

More from this Course

Quiz
21 verified answers

Laws of Inheritance

Quiz
15 verified answers

Laws of Inheritance

Quiz
14 verified answers

Lesson 2: Laws of Inheritance