Gene for colourblindness is located on
Homologous part of $X$-chromosome
Non-homologous part of $X$-chromosome
Homologous part of $Y$-chromosome
Non-homologous part of $Y$-chromosome
Pattern baldness, moustaches and beard in human males are examples of
Sicklecell anaemia is
Explain thalassemia.
$A$ : The posssibility of a female becoming a haemophilic is extremely rare.
$R$ : Mother of such a female has to be carrier and father should be haemophilic
Mendelian disorder may be of