Color blindness is a ..... trait.

Polydactyly in humans is caused by a/an:

Write a short note on Haemophilia.

Given that $X^h$ is the chromosome with the gene for haemophilia and $X$ is the chromosome with the normal gene. Which of the following individuals will act as a carrier for haemophilia?

Which of the following genotypes results in hemophilia in females and males respectively?
$\quad\quad$ Female $\quad\quad$ Male

Which of the following most appropriately describes haemophilia?