How many number of chromosome set of an individual receives after F1 generation in Honey Bee?
A. 32 chromosomes in female and 16 in male
B. 16 chromosomes in male and 8 in female
C. 16 chromosomes in male and 32 in female
D. 32 chromosomes in male and 32 in male
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → A and C
The honey bee shows haplodiploid sex determination. The sex depends on the number of chromosome sets. The queen (female, 32 chromosomes) makes eggs of 16 chromosomes by meiosis. The drone (male, 16 chromosomes) makes sperms of 16 chromosomes by mitosis. An egg fertilised by a sperm has 16 + 16 = 32 chromosomes and develops into a female (queen or worker). An unfertilised egg develops into a male by parthenogenesis, so it has only 16 chromosomes.
A. 32 chromosomes in female and 16 in male — Correct. Females are diploid (32) and males are haploid (16).
B. 16 chromosomes in male and 8 in female — Incorrect. The female has 32 chromosomes, not 8. No honey bee has 8.
C. 16 chromosomes in male and 32 in female — Correct. This is statement A in the reverse order.
D. 32 chromosomes in male and 32 in male — Incorrect. The male develops from an unfertilised egg, so it has 16 chromosomes, not 32.
NCERT Extract:
Sex Determination in Honey Bee –
