A male human is heterozygous for autosomal genes $A$ and $B$ and is also hemizygous for hemophilic gene $h$. What proportion of his sperms will be $abh$
$\frac{1}{{16}}$
$\frac{1}{4}$
$\frac{1}{8}$
$\frac{1}{{32}}$
Balbiani rings are sites of
Match List $I$ with List $II$.
List $I$ | List $II$ |
$A$. Gene $a$ | $I.\; \beta$-galactosidase |
$B$. Gene $y$ | $II$. Transacetylase |
$C$. Gene $i$ | $III$. Permease |
$D$. Gene $z$ | $IV$. Repressor protein |
Choose the correct answer from the options given below:
Who developed $DNA$ finger printing method ?
Micrococcas nuclease enzyme
The structure present over chromosome is