Question

1 2. 2. 3 4 5 SSOO 6. What is the pattern of inheritance for the pedigree above? What are the genotypes for the 6 numbered individuals?

Answer 1

a X-linked recessive in type of inheritance present on prevalent in If is more inheritance is Mall the affected gene is which in males the X-chromopomes. than females because female two X-Chromopor carry and males carry only X-Chromosome so for male be affected there should be con presence of por Xanked recessure gene but for fernales presence of both gecessive allele Can cause the disease. ome to one

an their ability inheritanco differentiale Colorblindney is - linked recessive type of where the person loses To between different colors like Red, Blue & Green, thee linked recessere condition is X- more prevalent en males because of the presence of only one that increases risk by sov. X - chromosome the Aspune xexo XX- Normal fernale XY- Normal male xxc - Carrier female xcy - Colorblind male Colorblind female xсxс 으 the Presence of one colorblind allele in female maket carrier them for the disease but these individuale (female) are not colorblind they are normal females but carrier. Condition - If the es not carrier and have normal color vision then and use when she marriles with is clo colorblind will be woman her genotype will be xx a man who then the genotype of the Man xoy Then the genotypic and will be phenotypic ration of their offspring

мам Woman ху XX Y хс XY All sonx of this couple will be normal and the the Х xxc х ху XXC all daughter will be the disease carrier for Genotypic Ratio XXXCXC: xx! xy : xy 0 : 0 : 1 : 1 or xx : ху 1 1 Phenotypic Ratio carrier female : Normal male 1 1