Freckles are controlled by the MCR1 gene, which sends signals to produce eumelanin, a skin pigment that protects human s
Posted: Mon Jul 11, 2022 2:20 pm
Freckles are controlled by the MCR1 gene, which sends signals toproduce eumelanin, a skin pigment that protects human skin fromradiation. When the gene is mutated, it does not send the signal toproduce euelanin, a different type of melanin (pheomelanin) isproduced, resulting in freckles. We each inherit one of these genesfrom each parent and therefore have two alleles. The gene thatproduces eumelanin will be refers to as E while the gene that doesnot will be referred to as P.
True or False:
If one gene alone is enough to produce eumelanin and prevent theformation of freckles, then E is dominant to P.
If E is dominant to P, a person with an EP genotype would havefreckles in their phenotype.
If E is dominant to P, the only genotype that would producefreckles is PP.
If people with the genotype EP produce freckles, then twofunctioning EE alleles are required to prevent the formation offreckles.
If people with the EP genotype produce freckles, then the Eallele could be considered dominant to the P allele.
True or False:
If one gene alone is enough to produce eumelanin and prevent theformation of freckles, then E is dominant to P.
If E is dominant to P, a person with an EP genotype would havefreckles in their phenotype.
If E is dominant to P, the only genotype that would producefreckles is PP.
If people with the genotype EP produce freckles, then twofunctioning EE alleles are required to prevent the formation offreckles.
If people with the EP genotype produce freckles, then the Eallele could be considered dominant to the P allele.