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Genotypes And Phenotypes
Test Description: Basic genotype and phenotype concepts
Instructions: Answer all questions to get your test result.
1) How many alleles make up a genotype?
A
4
B
3
C
2
D
1
2) Which of the following is an example of a homozygous recessive genotype?
A
AB
B
aa
C
AA
D
Aa
3) Which of the following is and example of a heterozygous genotype?
A
BB
B
aa
C
AA
D
Aa
4) W-wings and w-wingless; what trait will a heterozygous dragon have?
A
one wing
B
wIngs
C
no wings
D
I don't know
5) A parent can only pass on ____ of their alleles for each trait to their offspring.
A
3
B
1
C
2
D
4
6) In rabbits, black fur is dominant to white fur. What is the genotype for a white rabbit?
A
BB
B
AB
C
bb
D
Bb
7) If long fur is recessive to short fur, can a long haired cat pass on a short haired allele?
A
No, because long haired cats and short haired cats can't mate.
B
Yes, because the long haired cat could carry the hidden trait and can pass on either trait.
C
Yes, because the long haired cat has two dominant alleles and will pass on the short haired trait.
D
No, because a long haired cat doesn't have the dominant short haired allele to pass on.
8) In dragons, three toes are dominant to four toes. What is the genotype for a three toed dragon?
A
aa
B
AA only
C
AA or Aa
D
Aa only
9) Which of the following is an example of a phenotype?
A
aa
B
heterozygous
C
Blue eyes
D
AA
10) If brown eyes are dominant to blue eyes, what trait would a homozygous brown eyed person and a heterozgygous person have?
A
The first will have blue eyes and second will have brown eyes
B
Both will have blue eyes
C
Both will have brown eyes
D
The first will have brown eyes and second will have blue eyes
11) A person is heterozygous for a trait that follows Mendel's rule of dominance. Which allele will be hidden/not expressed?
A
The dominant allele
B
The recessive allele
C
Both dominant and recessive will be hidden
D
Neither, it will be a blended trait.
*select an answer for all questions
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