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WorksheetsGenetics Study: 1
Total questions: 12
Worksheet time: 9mins
Name
Class
Date
1.
Each one of the boxes on the Punnett Square represents what probability of an offsprings' genotype?
a)
25%
b)
1%
c)
10%
d)
0%
2.
What ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness?
a)
0 in 4
b)
1 in 4
c)
2 in 4
d)
4 in 4
3.
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
4.
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
5.
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
6.
A green pea plant (GG) is being crossed with a green pea plant (Gg). What is the phenotype?
a)
100 % rainbow
b)
50% yellow and 50% green
c)
100% green
d)
100% yellow
7.
A red flower (Rr) is crossed with a white flower (rr). What is the genotype?
a)
0 RR; 0 Rr: 4 rr
b)
2 RR; 0 Rr: 2 rr
c)
4 RR; 0 Rr: 0 rr
d)
0 RR; 2 Rr: 2 rr
8.
What is genetics?
a)
The study of heredity
b)
The study of how crosses happen
c)
The study of probability on humans
d)
The study of probability on organisms
9.
Which of the following would be classified as recessive?
a)
Rr
b)
RR
c)
rr
d)
None of these
10.
What is an allele that is hidden whenever the dominant allele is present?
a)
Dominant
b)
Codominant
c)
Recessive
d)
Heretozygous
11.
What is an example of hybrid or heretozygous genotype?
a)
Hh
b)
HH
c)
hh
d)
None of these
12.
What is the offspring of parents that have different alleles for a trait?
a)
Hybrid or Heretozygous
b)
Purebred or Homozygous
c)
Genotype
d)
Phenotype
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