Principle of Inheritance and VariationHard
Question
A colourblind girl is rare because she will be born only when
Options
A.her mother and maternal grandfather were colourblind
B.her father and maternal grandfather were colourblind
C.her mother is colourblind and fatherhas normal vision
D.parents have normal vision but grand parents were colourblind
Solution
For a girl to be colourblind, the genotype of her father should be XCY and of her mother either XCX or XCXC, where XC represents colourblind gene.
In the diven options this is only possible when her father and maternal grandfather were colourblind.
In the diven options this is only possible when her father and maternal grandfather were colourblind.
Create a free account to view solution
View Solution FreeTopic: Principle of Inheritance and Variation·Practice all Principle of Inheritance and Variation questions
More Principle of Inheritance and Variation Questions
In a DNA percentage of thymine is 20. What is the percentage of guanine ?...If one parent has blood group A and the other parent has blood group B. The offspring have which blood group...1 : 2 : 1 phenotypic and genotypic ratios occur in case of...The length of DNA moleacule greatly exceeds the dimensions of the nucleus in eukaryotic cells. How is this DNA accommoda...Pleiotropy is the term in which a gene influences more than one trait. Its example is...