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2 years ago

HELLPP! ITS BIOLOGY

Biology

1 answer:

larisa [96]2 years ago

8 0

Answer:

So that in a guinea pig cross in the offspring the recessive trait —long hair— can be observed in 25%, the most probable genotype of the parents is heterozygous Ss.

Explanation:

In guinea pigs, for the characteristic hair length, short hair is the dominant allele and long hair is the recessive one.

In order for 25% of the offspring to express the recessive characteristic, the parents must have a recessive genotype, which can be seen in Punnett's Square:

P: Ss X Ss

Alleles S s

S SS Ss

s Ss ss

Where the offspring is:

50% Ss with short hair phenotype
25% SS with short hair phenotype
25% ss whose phenotype would be long hair.

According to this, heterozygous parents for the characteristic long hair in guinea pigs have a 25% chance of having offspring with long hair.

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2 years ago