Quiz about Dihybrid Cross

Question 1

A way to predict genetic probability using two different

sets of alleles on two different chromosomes.

Accepted Answer

Dihybrid Cross

Answer

Co-Dominance

Answer

Incomplete Dominance

Answer

Monohybrid Cross

Question 2

Using the dihybrid cross and key provided, what is the probability of the offspring being tall and white?

Accepted Answer

3

Answer

9

Answer

2

Answer

6

Question 3

In a dihybrid cross

Accepted Answer

two traits are crossed.

Answer

one trait is crossed.

Answer

four boxes are needed for the punnett square.

Answer

mom's alleles are dominant.

Question 4

Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?

Accepted Answer

3/16

Answer

9/16

Answer

1/16

Answer

16/16

Question 5

The chart shows a dihybrid cross between pea plants. What are the genotypes of the parents in this cross?

Accepted Answer

RrYy and RrYy

Answer

RRYY and rryy

Question 6

What was the primary objective of Mendel's dihybrid cross experiments?

Accepted Answer

To study the inheritance of two different traits

Answer

To determine the effect of environment on plant height

Answer

To confirm the true-breeding nature of pea plants

Answer

To understand the role of pollinators in plant breeding

Question 7

What are the possible genotypes for this cross?

Accepted Answer

TT = 25% Tt= 50% tt=25%

Answer

all tall

Answer

TT= 75% tt = 25%

Answer

Tt = 100%

Question 8

A white mouse with red eyes is crossed with a black mouse with brown eyes. The white mouse is recessive for both of its traits. The black mouse is dominant for both of its traits.

This cross would be

Accepted Answer

BBEE x bbee

Answer

BBEe x BbEe

Answer

BbEE x BbEe

Answer

BBee x BBEE

Question 9

What goes in box 3

Accepted Answer

Aabb

Answer

AABB

Answer

AAbb

Answer

aaBb

Question 10

What goes in box 15

Accepted Answer

aabb

Answer

AABB

Answer

aaBB

Answer

AAbb

Question 11

What goes in box 6

Accepted Answer

AaBB

Answer

AABB

Answer

aaBB

Answer

AAbb

Question 12

This image is an example of a ________ cross.

Accepted Answer

Dihybrid

Answer

Monohybrid

Answer

Purebred

Answer

Heterozygous

Question 13

What goes in box 1?

Accepted Answer

AABb

Answer

AABB

Answer

aabb

Answer

AaBB

Question 14

In cacti, long arms (A) are dominant to short arms (a). Suppose 2 heterozygous cacti are crossed. What percentage of their offspring are expected to have short arms?

Accepted Answer

25%

Answer

0%

Answer

75%

Answer

100%

Question 15

How many offspring will you have in a dihybrid cross?

Accepted Answer

16

Answer

4

Answer

8

Answer

5

Question 16

T4 - What genotype is missing from this Punnett Square?

Accepted Answer

RrYy

Answer

RRYY

Answer

rryy

Answer

RrYY

Question 17

In a dihybrid cross, what is the expected phenotypic ratio of the offspring?

Accepted Answer

9:3:3:1

Answer

3:1

Answer

1:1

Answer

1:2:1

Question 18

Which of the following best describes a dihybrid cross?

Accepted Answer

A cross between two individuals with different alleles for two traits

Answer

A cross between two individuals with different alleles for a single trait

Answer

A cross between two individuals with the same alleles for a single trait

Answer

A cross between two individuals with the same alleles for two traits

Question 19

What is the purpose of using a Punnett square in a dihybrid cross?

Accepted Answer

To predict the genotypic and phenotypic ratios of offspring

Answer

To determine the exact number of offspring

Answer

To identify the dominant trait only

Answer

To calculate the probability of a single trait

Question 20

In Mendel's dihybrid cross experiments, which two traits did he commonly study?

Accepted Answer

Seed color and seed shape

Answer

Plant height and flower color

Answer

Pod color and pod shape

Answer

Leaf size and stem thickness

Question 21

What is the significance of the 9:3:3:1 ratio in a dihybrid cross?

Accepted Answer

It represents the phenotypic ratio of the offspring

Answer

It represents the genotypic ratio of the offspring

Answer

It indicates a mutation in the offspring

Answer

It shows incomplete dominance

Question 22

If a plant with genotype AaBb is crossed with another AaBb plant, what is the probability of obtaining an offspring with genotype AABB?

Accepted Answer

1/16

Answer

1/4

Answer

1/8

Answer

1/2

Question 23

Which of the following is an example of a dihybrid cross?

Accepted Answer

Crossing a plant with yellow seeds and green pods with a plant with green seeds and yellow pods

Answer

Crossing a tall plant with a short plant

Answer

Crossing a red flower with a white flower

Answer

Crossing a plant with round seeds with a plant with wrinkled seeds

Question 24

In a dihybrid cross, what does each box in the 16-square Punnett square represent?

Accepted Answer

A possible genotype of the offspring

Answer

A possible phenotype of the offspring

Answer

A possible mutation in the offspring

Answer

A possible environmental effect on the offspring

Question 25

How does independent assortment relate to dihybrid crosses?

Accepted Answer

It explains why alleles for different traits are inherited independently

Answer

It explains why alleles for different traits are inherited together

Answer

It shows that alleles for the same trait are inherited together

Answer

It shows that alleles for the same trait are inherited independently

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