Which genotype indicates an individual Il/2?O xCxO xCYOXXOXY PEDIGREE SEX-LINKED RECESSIVE INHERITANCEIIIII35 6KEYUnaffected FemaleUnaffected MaleAffected FemaleAffected MaleColorblind Female XXColorblind Male XYCarrier Female XXNormal Male XYNormal Female XX

Name: Which genotype indicates an individual Il/2?O xCxO xCYOXXOXY PEDIGREE
Uploaded: 2024-03-20T06:42:55.000Z
Channel: Bartleby
Description: Which genotype indicates an individual Il/2?O xCxO xCYOXXOXY PEDIGREE SEX-LINKED RECESSIVE INHERITANCEIIIII35 6KEYUnaffected FemaleUnaffected MaleAffected FemaleAffected MaleColorblind Female XXColorblind Male XYCarrier Female XXNormal Male XYNormal

Traits which are determined by alleles present on the X chromosomes are referred to as X- linked inheritance. Since females are XX , they will have two X-linked alleles, whereas males will only have one X-linked allele as males are XY.From the given keys we get to know that - XCX - denotes carrier female XCY - denotes colorblind male XX - denotes normal female XY - denotes normal male Hence, from the given options we can conclude that the genotype indicated by individual II/2 is - XCX (carrier female) - is the correct option because when affected father and unaffected mother were crossed, one affected X chromosome from father and one unaffected chromosome mother was inherited by the individual II/2, making it a carrier female since the mother's normal X chromosome is the dominant here and the father's affected X chromosome acts as a carrier. XCY (colorblind male)- is the incorrect option because from the key we can see that it represents the individual III/2 who receives affected X chromosome from carrier female (II/2 individual) and normal Y chromosome from the II/1 individual. XX (normal female) - is the incorrect option because from the key we can see that it represents the individuals in III/1, III/3, III/5 who receives both unaffected X chromosomes from the male and female parents of II generations. XY (normal male)- is the incorrect option because from the key we can see that it represents the individual II/1, II/3, II/6, III/4, III/6 who receives both unaffected X and Y chromosomes from their female and male parents respectively.Thus, the genotype indicated by individual II/2 is XCX (carrier female).