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WorksheetsGenetics Review
Total questions: 10
Worksheet time: 9mins
Name
Class
Date
1.
In plants, tall (T) is dominant to short (t). Perform the following cross: Tt x Tt. What is the probability of producing a short plant?
a)
0%
b)
25%
c)
50%
d)
75%
2.
Which of the following is NOT a genotype?
a)
heterozygous
b)
a trait
c)
Bb
d)
homozygous recessive
3.
Which of the following alleles is homozygous (purebred) recessive?
a)
Tt
b)
tt
c)
TT
d)
t
4.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
5.
Heterozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
6.
Each one of the boxes on the Punnett Square represents what probability of an offsprings' genotype?
a)
25%
b)
1%
c)
10%
d)
0%
7.
In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?
a)
rr
b)
R
c)
RR
d)
RR or Rr
8.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
9.
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
10.
Two heterozygous red flower (white flowers are recessive) are crossed. What is the phenotype?
a)
75% red and 25% white
b)
25% red and 75% white
c)
100 White
d)
50% red 50% red
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