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8th Grade-Genetics
Test Description: Answer these questions on genetics to help you prepare for your rest.
Instructions: Answer all questions to get your test result.
1) Which of the following is heterozygous?
A
HH
B
YY
C
nn
D
Bb
2) Which of the following is homozygous?
A
Hh
B
BB
C
Yy
D
Tt
3) Which best describes co-dominance?
A
only the recessive trait shows
B
both traits will show
C
a blend of traits show
D
only the dominant trait shows
4) Which best describes incomplete dominance?
A
both traits will show
B
only the recessive trait shows
C
only the dominant trait shows
D
a blend of traits show
5) Who is known as the father of genetics?
A
Reginald Punnett
B
Thomas Jefferson
C
George Washington
D
Gregor Mendel
6) If R represents round seeds and r represents oval seeds, which of the following will have oval seeds?
A
rr
B
rR
C
Rr
D
RR
7) If R represents round seeds and r represents oval seeds, what would be the genotype of a male heterozygous round breeding with a female homozygous round?
A
RR x rr
B
rr x rr
C
Rr x Rr
D
RR x Rr
8) When a dominant gene is present which is true?
A
Neither dominant nor recessive will show.
B
The recessive phenotype will show
C
The recessive phenotype will mask the dominant.
D
The dominant phenotype will show.
9) Which of the following is an example of phenotype?
A
BB
B
bb
C
Bb
D
Brown eyes
10) Which of the following is a genotype?
A
Brown Eyes
B
Brown Hair
C
Bb
D
Curly Hair
*select an answer for all questions
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