Which plant was used by Taylor to prove semiconservative replication at chromosomal level?

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 $abh$

A characteristic showing continuous variation is controlled by a

For providing evidence in favour of semiconservative way of $DNA$ replication; Taylor, Woods and Hughes performed experiments on