Question

Chromosome number of partial hydatidiform mole is

• A. 46 XX
• B. 45 XO
• C. 46 XXY
• D. 69 XXX

Answer 1

The Correct Option is D

Partial hydatidiform mole, a type of gestational trophoblastic disease, occurs due to the abnormal fertilization by two sperm, resulting in triploid karyotype. Typically, this involves one set of maternal chromosomes and two sets of paternal chromosomes.

The characteristic chromosome number for a partial hydatidiform mole is 69, specifically represented as 69 XXX, 69 XXY, or 69 XYY, depending on the sex chromosomes involved.

This is due to the presence of three complete sets of chromosomes, accounting for 69 in total. Therefore, the correct chromosome number for a partial hydatidiform mole is indeed:

69 XXX