Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Chromosomes and Genes

Total questions: 29

Worksheet time: 26mins

Name
Class
Date
1.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
2.
What is the probability of heterozygous offspring?
a)
25%
b)
50%
c)
0%
d)
100%
3.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
4.
Which choice best represents the genotype of this cross?
a)
1 Yy: 2 yy: 0 YY
b)
2 Yy: 2 yy: 0 YY
c)
3 Yy: 1 yy: 0 YY
d)
1 Yy: 3 yy: 0 YY
5.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
6.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
7.

Two parents have a heterozygous genotype for eye color. What is the chance of having a blue eye baby?

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

8.

Fill in the Yellow Box

a)

AA

b)

Aa

c)

aa

9.

Fill in the Yellow Box

a)

Bb

b)

BB

c)

bb

10.

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 chance the baby frogs will have brown skin?

a)

0%

b)

25%

c)

50%

d)

100%

11.

How chance the offspring born from this cross will have a homozygous dominant genotype?

a)

25%

b)

50%

c)

75%

d)

100%

12.

What is the mother's genotype?

a)

DD

b)

Dd

c)

dd

13.

What is the likelihood that the offspring will be green (G)?

a)

25%

b)

50%

c)

75%

d)

100%

14.

A tall plant (TT) is crossed with a short plant (tt). All of the offspring will be ____________.

a)

tall

b)

short

15.
If T=Tall & t=short, what is the genotypic ratio?
a)
1:3
b)
3:1
c)
1:2:1
d)
2:2
16.
A heterozygous yellow pea plant's genotype would be:
a)
YY
b)
yy
c)
Yy
d)
Yg
17.
What is the yellow seed genotype?
a)
aa
b)
Aa
c)
AA
d)
AA or Aa
18.
Black fur is dominant (B) over white fur (b).  Find the probability of heterozygous offspring using the following genotype of these parents.
Bb + bb
a)
0%
b)
25%
c)
50%
d)
100%
19.
What would be the results of a genetic cross between the following parents?  TT + Tt
a)
Tt, tt, tt, tt
b)
TT, TT, TT, Tt
c)
Tt, Tt, Tt, TT
d)
TT, TT, Tt, Tt
20.
It is NOT possible for two purebred black rabbits (both BB) to produce white offspring.
a)
True
b)
False
21.
What chance does the offspring have of showing a recessive trait?
a)
50%
b)
75%
c)
100%
d)
25%
22.
What is the allele combination for square 1?
a)
Dd
b)
DD
c)
dd
d)
D
23.
What is the possibility of this offspring having a dominate trait?
a)
50%
b)
75%
c)
25%
d)
0%
24.
What is the missing allele?
a)
a
b)
A
c)
AA
d)
aa
25.
What is the genotype for the black chickens?
a)
BB
b)
Bb
c)
bB
d)
bb
26.
What is the phenotype for Bb?
a)
Black chicken
b)
Blue Chicken
c)
Dominant
d)
Red spot
27.
If two black chickens (genotype bb) mated, would there be a chance of having Blue (Bb, BB) chickens?
a)
No chance
b)
50% chance
c)
25% chance
d)
100% chance
28.

Dominant alleles are represented by a:

a)

Male gene

b)

lowercase letter

c)

recessive trait

d)

capital letter

29.

Fill in the Yellow Box

a)

AA

b)

Aa

c)

aa

Similar Resources on Wayground

LONG QUIZ (Science 3rd Quarter)

25 questions

LONG QUIZ (Science 3rd Quarter)

quiz

Worksheet

•

9th Grade

Tissue Location

24 questions

Tissue Location

quiz

Worksheet

•

9th - 12th Grade

Unit 5 Review

25 questions

Unit 5 Review

quiz

Worksheet

•

9th - 12th Grade

REVISON U1+U2

24 questions

REVISON U1+U2

quiz

Worksheet

•

9th Grade

Chemical Terms 1 - Matter and Its Changes

25 questions

Chemical Terms 1 - Matter and Its Changes

quiz

Worksheet

•

10th - 11th Grade

TOP RANK UP PMRSMANSATASE

25 questions

TOP RANK UP PMRSMANSATASE

quiz

Worksheet

•

10th - 11th Grade

Unit 5 Identifying Types of Reactions Midterm Review

25 questions

Unit 5 Identifying Types of Reactions Midterm Review

quiz

Worksheet

•

10th Grade

SNC 2P Grade 10 Applied Science: Chemistry

25 questions

SNC 2P Grade 10 Applied Science: Chemistry

quiz

Worksheet

•

9th - 11th Grade