Question

red - green color blindness is an x - linked recessive disorder that is passed through generations and can be traced by using a pedigree.which individuals in the pedigree are identified and labeled carriers for red - green color blindness?lisa and monicasam tim bella and joshua

Explanation:

A carrier of an X - linked recessive disorder has one normal allele and one mutant allele. For X - linked recessive disorders, females can be carriers (\(X^{c}X^{+}\)) because they have two X chromosomes. Males (\(XY\)) cannot be carriers for X - linked recessive disorders in the traditional sense (since they have only one X chromosome; if they have the mutant allele, they are affected, not carriers). Looking at the pedigree:

• Lisa has the genotype \(X^{c}X^{+}\) (half - filled circle, indicating one mutant allele).
• Monica has the genotype \(X^{c}X^{+}\) (half - filled circle, indicating one mutant allele).

Answer:

Lisa and Monica