17.5k views
0 votes
HELLPP! ITS BIOLOGY

HELLPP! ITS BIOLOGY-example-1
User Phatmann
by
8.1k points

1 Answer

6 votes

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.

Step-by-step 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.

User Kaherdin
by
8.5k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.