Genetics 3 Question Preview (ID: 24335)


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Organisms with two different alleles for a trait are said to be
a) heterozygous
b) homozygous
c) purebred
d) recessive

Which genotype below could be considered homozygous recessive?
a) TT
b) Pp
c) TtPp
d) tt

Which genotype below would be considered Homozygous dominant
a) PPYy
b) YYGG
c) YgHh
d) nnmm

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) 75%
d) 50%

A Heterozygous long tailed mermaid is crossed with a Homozygous long tailed mermaid. What percentage of the offspring will be long tailed?
a) 0%
b) 25%
c) 50%
d) 100%

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) 2
b) 4
c) 6
d) 16

Which of the following is NOT a phenotype?
a) Long tailed
b) Purple flower
c) PpTt
d) White flower

Which of the following is NOT a genotype?
a) TtBb
b) Purple flower
c) Pp
d) TT

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, pp
c) PP
d) Pp, PP, pp

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
c) PP, Pp, RR, Rr
d) PP, Pp

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