In $F_{2}$-generation, quantitative inheritance $1: 4: 6: 4: 1$ is obtained instead of
$9: 3: 3: 1$
$8: 6: 4: 1$
$7: 4: 1: 4$
$6: 6: 4: 7$
Brachydactyly is due to
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?
Drosophila melanogastor has $8$ chromosomes in somatic cell. How many linkage groups will be there
Term 'genetics' was given by
Barr bodies are