Home › AIIMS Nursing › Biology › Principles of Inheritance and Variation › In haemophilia, an unaffected carrier female may
In haemophilia, an unaffected carrier female may
Adevelop the disease herself always
Bpass it only to her daughters
Ctransmit the disease to her sons
Dcure it in the next generation
Answer & Solution
Correct answer: C. transmit the disease to her sons
1. Haemophilia is a sex linked recessive condition.
2. A female carrying one defective copy is usually unaffected herself.
3. She may still transmit the disease to her sons.
4. A son inherits only one X, so a single defective copy is enough to express it.
5. This inheritance pattern is why the pedigree skips generations on the female side.
_Source: NCERT Class 12 Biology Ch4 'Principles of Inheritance and Variation'_
Related questions
The phenotypic ratio from a dihybrid cross is:A heterozygous parent produces how many kinds of gamete?A homozygous parent produces gametes that are all:During gamete formation, a gamete receives how many of the two factors?The law of segregation rests on the fact that alleles show no:The factor not expressed in a dissimilar pair is called:In a dissimilar pair of factors, the one expressed is called:Mendel stated that these factors occur in: