Mention the types of organ i.e. homologous or analogous in the following:

Neck bone of giraffe and a giant whale.

Two pink coloured flowers on crossing resulted in 1 red, 2 pink and 1 white flower progeny. The nature of the cross will be

In humans males, all the chromosomes are paired perfectly except one. This/these unpaired chromosome is/are 

(i) large chromosome

(ii) small chromosome

(iii) Y chromosome

(iv) X chromosome