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Genetics 3
Test Description: Genetics review
Instructions: Answer all questions to get your test result.
1) Organisms with two different alleles for a trait are said to be
A
homozygous
B
heterozygous
C
purebred
D
recessive
2) Which genotype below could be considered homozygous recessive?
A
TT
B
TtPp
C
tt
D
Pp
3) Which genotype below would be considered Homozygous dominant
A
PPYy
B
YYGG
C
nnmm
D
YgHh
4) A Heterozygous long tailed mermaid is crossed with a Homozygous long tailed mermaid. What percentage of the offspring will be short tailed?
A
0%
B
25%
C
50%
D
75%
5) A Heterozygous long tailed mermaid is crossed with a Homozygous long tailed mermaid. What percentage of the offspring will be long tailed?
A
50%
B
100%
C
0%
D
25%
6) If a pea plant was heterozygous for round, yellow peas was crossed with a plant that was homozygous for round and heterozygous for yellow peas, how many different phenoytes would the offspring have?
A
4
B
16
C
2
D
6
7) Which of the following is NOT a phenotype?
A
Purple flower
B
PpTt
C
Long tailed
D
White flower
8) Which of the following is NOT a genotype?
A
TT
B
Purple flower
C
TtBb
D
Pp
9) Suppose purple(P) is dominant to white (p). What would be all the possible genotype combinations for JUST purple flowers?
A
Pp, PP
B
PP
C
Pp, PP, pp
D
Pp, pp
10) Suppose purple(P) is dominant to white (p) and Round (R) is dominant to wrinkled (r). What would be all the possible genotype combinations for JUST purple flowers?
A
RR, PP
B
PP, Pp
C
PP, Pp, RR, Rr
D
pp
*select an answer for all questions
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