WorksheetsGenes and Heredity Lessons 1 and 2 Retake
Total questions: 15
Worksheet time: 17mins
Name
Class
Date
1.
Why do scientist use Punnett Squares?
a)
A tool scientist use to to see alleles
b)
A tool scientist use to see which alleles are dominant
c)
A tool scientist use to determine possible genotypes for offspring
2.
Which of the following is a Homozygous Dominant Genotype?
a)
Yy
b)
XX
c)
zz
3.
Which of the following is a homozygous recessive genotype?
a)
HH
b)
dd
c)
Aa
4.
Which of the following is a heterozygous genotype?
a)
Gg
b)
UU
c)
pp
5.
Fill in the Yellow Box
a)
AA
b)
Aa
c)
aa
6.
Fill in the Yellow Box
a)
Bb
b)
BB
c)
bb
7.
How chance the offspring born from this cross will have a homozygous dominant genotype?
a)
25%
b)
50%
c)
75%
d)
100%
8.
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%
9.
What is the mother's genotype?
a)
DD
b)
Dd
c)
dd
10.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
11.
T - tall and t = short
In the punnett square below, what belongs in the missing square
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
12.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond
13.
What is the phenotype of the offspring? (A-Brown hair; a-blond hair)
a)
50 % Brown Hair and 50% Blond Hair
b)
25 % Brown Hair and 75% Blond Hair
c)
75 % Brown Hair and 25% Blond Hair
d)
0% Brown Hair and 100% Blond Hair
14.
What are genes?
a)
Something you wear.
b)
Segments of DNA that carry traits for offspring.
c)
The powerhouse of cells.
d)
None of the above.
15.
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
100 %
