TRY IT! Problem Solving: 1. Color blind female married a male with a normal vision. What will be the genotypes and phenotypes of their offspring? How many percent of their offspring will have a color-blind vision? 2.A carrier of color-blind female married a color-blind male. What will be the genotypes and phenotypes of their offspring? How many percent of their offspring will have a color-blind vision? 3.A hemophilic female married a hemophilic male. What will be the genotypes and phenotypes of their offspring? How many percent of their offspring will be hemophilic?
Answer (1)
I GOT YOU PO!Color blindness and hemophilia are both X-linked recessive traits. I’ll use:Xᴺ (normal) and Xᶜ (color-blind) for color visionXᴴ (normal) and Xʰ (hemophilia) for blood clottingAssume equal chance of sons/daughters.1) Color-blind female × normal-vision maleParents: Female XᶜXᶜ × Male XᴺYOffspring:Daughters: all XᴺXᶜ → carriers, normal visionSons: all XᶜY → color-blindPercent color-blind:Daughters: 0%Sons: 100%Overall: ~50% of all children2) Carrier female × color-blind maleParents: Female XᴺXᶜ × Male XᶜYPunnett outcomes (each 25%):XᴺXᶜ → daughter, carrier (normal vision)XᶜXᶜ → daughter, color-blindXᴺY → son, normalXᶜY → son, color-blindPercent color-blind:Daughters: 50% (half of daughters)Sons: 50% (half of sons)Overall: ~50% of all children3) Hemophilic female × hemophilic maleParents: Female XʰXʰ × Male XʰYOffspring:Daughters: all XʰXʰ → hemophilicSons: all XʰY → hemophilicPercent hemophilic:Daughters: 100%Sons: 100%Overall: 100% of all childrenBRAINLIEST PLEASE <3
