Quiz about Genetics and Punnett Squares (9.19)

Question 1

In pea plants, the tall allele is dominant to the short allele. What key would demonstrate this?

Accepted Answer

Tall = T
Short = t

Answer

Tall = T
Short = S

Answer

Tall = t
Short = T

Answer

Tall = TT
Short = tt

Question 2

In a heterozygous genotype, the ___________ allele takes over in the phenotype.

Accepted Answer

dominant

Answer

recessive

Answer

lower case letter

Answer

both

Question 3

Dominant alleles are represented by a:

Accepted Answer

capital letter

Answer

Male gene

Answer

lowercase letter

Answer

recessive trait

Question 4

Identify the homozygous dominant genotype:

Accepted Answer

FF

Answer

Ff

Answer

ff

Answer

fF

Question 5

Which of the following would be a phenotype?

Accepted Answer

red hair

Answer

Aa

Answer

heterozygous

Answer

aa

Question 6

Which of the following genotypes is heterozygous?

Accepted Answer

Bb

Answer

BB

Answer

bb

Answer

B

Question 7

Which of the following genotypes is homozygous dominant?

Accepted Answer

YY

Answer

Yy

Answer

yY

Answer

yy

Question 8

Which of the following genotypes is homozygous recessive?

Accepted Answer

tt

Answer

Tt

Answer

TT

Answer

tT

Question 9

Which choice best represents the genotypic ratios for the offspring of this cross?

Accepted Answer

2 Yy: 2 yy: 0 YY

Answer

1 Yy: 2 yy: 0 YY

Answer

3 Yy: 1 yy: 0 YY

Answer

1 Yy: 3 yy: 0 YY

Question 10

Fill in the Yellow Box

Accepted Answer

Aa

Answer

AA

Answer

aa

Answer

none of these

Question 11

Fill in the Yellow Box

Accepted Answer

bb

Answer

Bb

Answer

BB

Answer

none of these

Question 12

What is the probability that the offspring born from this cross will have a homozygous dominant genotype?

Accepted Answer

50%

Answer

25%

Answer

75%

Answer

100%

Question 13

The punnett square is used to tell the color of a frogs skin. "G" means green skin and "g" means brown skin. What is the probability the baby frogs from this cross will have brown skin?

Accepted Answer

0%

Answer

25%

Answer

50%

Answer

100%

Question 14

Purple (P) is dominant to the white (p).

According to the Punnett Square, what is the probability of an offspring being purple?

Accepted Answer

100%

Answer

25%

Answer

0%

Answer

50%

Question 15

What is the yellow seed genotype?

Accepted Answer

AA or Aa

Answer

aa

Answer

Aa

Answer

AA

Question 16

What is the dominant trait?

Accepted Answer

yellow pea seeds

Answer

green pea seeds

Answer

there is no dominant seed

Answer

Jolly green giant

Question 17

What are the genotypic probabilities for the offspring of this cross?

Accepted Answer

BB = 25% Bb = 50% bb = 25%

Answer

25% blue eye 75 % brown eye

Answer

BB= 50 % bb = 50%

Answer

All brown eye

Question 18

What are the parents' genotypes?

Accepted Answer

Heterozygous for brown eyes

Answer

Homozygous for brown eyes

Answer

Homozygous for blue eyes

Answer

Heterozygous for blue eyes

Question 19

What is the phenotype for the recessive trait?

Accepted Answer

blue eyes

Answer

brown eyes

Answer

green eyes

Question 20

A section of the DNA strand that determines a specific trait

Accepted Answer

gene

Answer

trait

Answer

chromosome

Answer

allele

Genetics and Punnett Squares (9.19)

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science