In $1980$, F. Sanger was awarded Nobel prize second time to be shared by Gilbert and Maxum for their work on
Genetic mapping of chromosomes
Determining amino acid sequence of insulin
Determining base sequence of $DNA$ of virus
Determining the structure of $DNA$
Which plant was used by Taylor to prove semiconservative replication at chromosomal level?
A pure breeding pea plant with the dominant phenotype of character $A$ and recessive phenotype of character $B$ was crossed with another pure breeding plant with the recessive phenotype of $A$ and dominant phenotype of character $B. A$ offspring of this cross was crossed with a homozygous recessive for both the characters -$A$ and $B$. The following results are obtained $22$ were phenotypically dominant for $A$ and recessive for $B$.
$4$ were phenotypically dominant for both $A$ and $B$.
$4$ were phenotypically recessive for both $A$ and $B$.
$24$ were phenotypically recessive for $A$ and dominant for $B$.
These results show that
The okazaki fragments in $DNA$ chain
In between two nucleosomes, how many nucleotide pairs are present
Which one of the following peak absorption of ultraviolet light by heterocyclic bases $(Nitrogen bases)$