One day, you discover a new phenotype in one of your litters of baby rats: three baby rat siblings were born with purple eyes. You think that the baby rats may have been born with a mutant allele, and decide the investigate. You raise the three purple-eyed rats to maturity, and use them in the following crosses:

What is the dominance relationship between the purple mutant allele and the eye-colour allele and the eye-colour alleles you identified in question 1a? Formulate a hypothesis, and support it by referring to the data in the table.

Transcribed Image Text:

Cross # 5 6 7 Parents (P₁) Purple eyes x yellow eyes Purple eyes x red eyes Purple eyes x yellow eyes Offspring (F₂) 32 purple eyes 15 purple eyes 16 yellow eyes 15 purple eyes 7 yellow eyes 8 red eyes Cross # 5 6 7 Parents (P₁) Purple eyes x yellow eyes Purple eyes x red eyes Purple eyes x yellow eyes Offspring (F₂) 32 purple eyes 15 purple eyes 16 yellow eyes 15 purple eyes 7 yellow eyes 8 red eyes

Answer rating: 100% (QA)

Here the mutant allele Rmut seems to be dominant over the normal alleles R and r This ... View the full answer