Lesch Nyhan disease is an $X-$linked recessive disorder that causes neurological damage in human beings. $A$ survey of $500$ mates from a caucasion population revealed that $20$ were effected with this disorder. What is the frequency of the normal allele in this population?
$9.6$
$0.8$
$0.096$
$96$
Change of male and female parents during crosses is known as
Character choosen by Mendel are located on how many chromosome
The Barr body is observed in
Chromosomal theory of inheritance was proposed by