What is the genotype for freckles?
Possible genotypes for their red hair (recessive trait) and freckles (dominant trait) are: rr only for red hair and Ff or FF for freckles.
Is no freckles a recessive trait?
This trait is reportedly due to a single gene; the presence of freckles is dominant, the absence of freckles is recessive1. Early geneticists reported that curly hair was dominant and straight hair was recessive.
What is genotype EE?
The person with the Ee genotype is heterozygous for the trait, in this case, free earlobes. An individual is heterozygous for a trait when it has two different allelic forms of a particular gene. The heterozygous individual received one form of the gene from one parent and a different allele from the other parent.
Does Sally have freckles?
According to the Punnett square, Sally does have freckles because she has a dominate trait whichgives her a 50% chance of having freckles.
What is a heterozygous genotype?
(HEH-teh-roh-ZY-gus JEE-noh-tipe) The presence of two different alleles at a particular gene locus. A heterozygous genotype may include one normal allele and one mutated allele or two different mutated alleles (compound heterozygote).
Why am I the only person in my family with freckles?
The number of freckles you have is down to a combination of genes and environment. Research shows that identical twins have similar numbers of freckles more frequently than non-identical twins, but the genetic background to freckles is complex.