Wild type flies have brick-red eyes. Flies can also havebright-red eyes. This trait is determined
by a recessive allele, called "scarlet" & labeled as "st". Thedominant allele of this gene is labeled
as "st+". Thus, flies with the genotype "stst" will have bright-redeyes, & flies with the genotype
"st+st+" or "st+st" will have Wild type eyes. Flies can also havebrown eyes. It is also a recessive
trait determined by the gene "brown". Flies with the genotype"brbr" will have brown eyes, &
flies with the genotype "br+br+" or "br+br" will have Wild typeeyes. If you cross flies with brightred
eyes & flies with brown eyes, all the offspring will have Wildtype eyes. A) What are the
genotypes of P & F1 flies? If you cross 2 F1 flies, you observe9/16 Wild type, 3/16 brown, 3/16
scarlet, & 1/16 white-eyed flies. B) Explain these results?
Wild type flies have brick-red eyes. Flies can also havebright-red eyes. This trait is determined
by a recessive allele, called "scarlet" & labeled as "st". Thedominant allele of this gene is labeled
as "st+". Thus, flies with the genotype "stst" will have bright-redeyes, & flies with the genotype
"st+st+" or "st+st" will have Wild type eyes. Flies can also havebrown eyes. It is also a recessive
trait determined by the gene "brown". Flies with the genotype"brbr" will have brown eyes, &
flies with the genotype "br+br+" or "br+br" will have Wild typeeyes. If you cross flies with brightred
eyes & flies with brown eyes, all the offspring will have Wildtype eyes. A) What are the
genotypes of P & F1 flies? If you cross 2 F1 flies, you observe9/16 Wild type, 3/16 brown, 3/16
scarlet, & 1/16 white-eyed flies. B) Explain these results?
For unlimited access to Homework Help, a Homework+ subscription is required.