If a father and son are both defective in red-green colour vision, is it likely that the son inherited the trait from his father ? Comment.
If a father and son are both defective in red-green colour vision, is it likely that the son inherited the trait from his father ? Comment.
Gene for colour blindness is$X-$chromosome linked. sons receive their $\mathrm{X}$ from their mother, not from their father. Male-to-male inheritances is not possible for $X$-linked traits in humans. In the given case the mother of the child must be a carrier (heterozygous) for colour blindness gene.
Similar Questions
Given is : $X$ is the chromosome with gene for haemophilia and $X$ is the chromosome with normal gene. Which of the following individuals will act as carrier for haemophilia
Given is : $X$ is the chromosome with gene for haemophilia and $X$ is the chromosome with normal gene. Which of the following individuals will act as carrier for haemophilia
In the given pedigree, indicate whether the shaded symbols indicate dominant or recessive allele.
In the given pedigree, indicate whether the shaded symbols indicate dominant or recessive allele.
In a sickle cell anaemia glutamic acid is replaced by valine, which the following codes for glutamic acid ?
In a sickle cell anaemia glutamic acid is replaced by valine, which the following codes for glutamic acid ?
The daughter born to haemophilic father and normal mother could be
The daughter born to haemophilic father and normal mother could be
- [AIIMS 1992]
Haemophilic female marries normal male, the theoretical ratio of their offsprings regarding haemophilia will be
Haemophilic female marries normal male, the theoretical ratio of their offsprings regarding haemophilia will be