:Match the columns :

Column $I$	Column $II$
$(1)$ Albinism	$(p)$  recessive gene represented by HbsHbs.
$(2)$ Phenyl  Ketonuria	$(q)$ recessive gene represented by cc.
$(3)$ Sickle cell  anaemia	$(r)$ recessive gene  represented by aa.
$4)$ Alkaptonuria	$(s)$ recessive gene represented by pp

Among symbol $A, B$ and $C, C$ indicates

Select the correct match.

Which of the following occurs due to the presence of autosome linked dominant trait?

Given below is a pedigree chart of a family with five children. It shows the inheritance of attached earlobes as opposed to the free ones. The squares represent the male individuals and circles the female individuals Which one of the following conclusions drawn is correct

Sickle­cell anaemia is