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Genotypes And Phenotypes Practice
Test Description: Practice identifying homozygous vs. heterozygous, dominant vs. recessive, and allele symbols.
Instructions: Answer all questions to get your test result.
1) In cats, long hair is dominant over short hair. What letter would you use to represent the long hair allele?
A
S
B
L
C
s
D
l
2) In cats, long hair is dominant over short hair. What letter would you use to represent the short hair allele?
A
L
B
S
C
l
D
s
3) Which of the following represents a homozygous dominant genotype?
A
LL
B
Ll
C
ll
4) Which of the following represents a heterozygous genotype?
A
ll
B
LL
C
LS
D
Ll
5) Which of the following represents a homozygous recessive phenotype?
A
ll
B
Ll
C
LL
6) In cats, long hair is dominant over short hair. If a cat has the genotype Ll, what will its phenotype be?
A
Short hair
B
Long hair
C
Medium hair
7) In cats, long hair is dominant over short hair. If a cat's phenotype is short hair, what is its genotype?
A
ll
B
Ll
C
LL
8) In guinea pigs, black fur is dominant over white fur. If a guinea pig's phenotype is black, what is its genotype?
A
bb
B
Bb
C
BB or Bb
D
BB
9) In guinea pigs, black fur is dominant over white fur. If a guinea pig's phenotype is white, what is its genotype?
A
Bb
B
BB
C
bb
D
BB or Bb
10) In guinea pigs, black fur is dominant over white fur. If a guinea pig's genotype is Bb, what will its phenotype be?
A
white
B
black
C
gray
*select an answer for all questions
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