In clown fish, the allele B for blue scales is dominant over the allele b for ye
ID: 20554 • Letter: I
Question
In clown fish, the allele B for blue scales is dominant over the allele b for yellow scales. On another chromosome, the allele N for long tail fin is dominant over its allele n for short tail fin. Give the most probable genotypes for the parent cross when the following offspring are produced:a) Parents: Offspring:
blue with long tail x yellow with short tail 56 blue with long tails, 53 yellow with long tails
b) Parents: Offspring:
yellow with long tail x blue with short tail all blue with long tails
Explanation / Answer
In clown fish, the allele B for blue scales is dominant over the allele b for yellow scales. On another chromosome, the allele N for long tail fin is dominant over its allele n for short tail fin. Give the most probable genotypes for the parent cross when the following offspring are produced:
a) Parents: Offspring:
blue with long tail x yellow with short tail
56 blue with long tails, 53 yellow with long tails
blue with long tails, Bb Nn x bb NN yellow with long tails
bN
B N
B N bN
blue with long tails,
Bn
Bn bN
blue with long tails,
b N
b N bN
yellow with long tails
b n
b n bN
yellow with long tails
b) Parents: Offspring:
yellow with long tail bb NN x BBnn blue with short tail
all blue with long tails
Bn
b N
B n bN
blue with long tails
bN
B N
B N bN
blue with long tails,
Bn
Bn bN
blue with long tails,
b N
b N bN
yellow with long tails
b n
b n bN
yellow with long tails
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