WorksheetsGenetics
Total questions: 10
Worksheet time: 13mins
Name
Class
Date
1.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
2.
Both parents in this Punnet square
a)
are homozygous dominant
b)
are homozygous recessive
c)
are heterozygous
d)
have blue eyes
3.
A tall plant (TT) is crossed with a tall plant (Tt). What is the phenotype of the offspring?
a)
50% homozygous dominant; 50% heterozygous; 100% tall
b)
100% homozygous dominant; 100% tall
c)
25% homozygous dominant; 75% heterozygous; 100% short
d)
50% homozygous dominant; 50% heterozygous; 100% short
4.
In humans, having dimples is dominant over not having dimples. If a woman without dimples marries a man heterozygous for dimples, what is the likelihood that their children will have dimples?
a)
25%
b)
50%
c)
75%
d)
100%
5.
In humans, having dimples is dominant over not having dimples. If both parents are heterozygous for dimples, what is the likelihood that their children will have dimples?
a)
25%
b)
50%
c)
75%
d)
100%
6.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
7.
What belongs in box 4?
a)
F
b)
FF
c)
Ff
d)
ff
8.
"The Great White Shark was 20 feet in length. Phenotype or Genotype?
a)
phenotype
b)
genotype
9.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
10.
A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks?
a)
0%
b)
25%
c)
50%
d)
75%
100 %
