Female honey bees are ________ having _________ chromosomes.

Drones do not have __(i)_ and thus cannot have _(ii)_, but have a (iii) and can have _(iv)_ The correct words for (i), (ii), (iii) and (iv) respectively are

Environmental mechanism of sex determination is observed in all of the following, except

In honey bee, a male i.e. drone develops from

Select the correct match

Select odd one w.r.t sex limited traits.

Heterogametic male is found in all, except

Substitution of a purine base with a pyrimidine base or vice versa is called

Porcupine skin is a

The foundation of chromosomal basis of sex determination was laid down by