Refer to the given figure.\ This type of sex determination is found in\

Question

Professor PC Thomas Classes · Answer

(d) : Haploid-diploid mechanism or haplodiploidy is a unique phenomenon in which an unfertilised egg develops into a male and a fertilised egg develops into a female. Therefore, the female is diploid ( $2 n$ ) and the male is haploid ( $n$ ). Eggs are formed by meiosis and sperms by mitosis. Fertilisation restores the diploid number of chromosomes in the zygote which gives rise to the female. If the egg is not fertilised, it will still develop but into a male (arrhenotoky). It is seen in hymenopterous insects, such as bees, wasps, saw flies and ants.\