NEET Biology question
The possibility of a female becoming haemophilic is extremely rare because the mother of such a female has to be at least (i) and the father should be (ii) .
Answer: (B)
Solution
A female becomes haemophilic only if she is homozygous recessive (), requiring one allele from each parent. Since the father transmits his only X chromosome to all daughters, he must himself be haemophilic () to supply this allele; the mother, to supply her
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.
Create a free account