STD 12 - 4. principal of inheritance and variation — BIOLOGY STD 12 Science — Question

$(i)$ Queen Elizabeth shows a number of haemophilic descendents.

$(ii)$ Variation in blood group prevalences due to incomplete dominance.

$(iii)$ Drosophila has three pairs of autosomal chromosomes.

$(iv)$ In birds, female is heterozygous.

$(a)$ The cattle egret and grazing cattle

$(b)$ Barnacle balanus and Barnacle chathamalus

$(c)$ Goat and Abingdon turtle from Galapagosisland

$(d)$ Barnacles growing on the back of whale