In paracentric inversion, rearrangement of genes

Correct option is D

✅ (d) is confined to single arm of a chromosome
· Paracentric inversion involves the inversion of a chromosome segment that does not include the centromere.
· The inversion is limited to a single arm of the chromosome.
❌ (a) involves the exchange of telomere ends of a chromosome
· Paracentric inversion does not involve telomere ends exchange, rather internal segments of a single arm.
❌ (b) involves the centromere part of a chromosome
· If centromere is involved, it’s called a pericentric inversion, not paracentric.
❌ (c) involves both the arms of a chromosome
· This would require centromere involvement, making it pericentric, not paracentric.