The $9 : 3 : 3 : 1$ ratio is modified to $9 : 7$ ratio due to

In sweet peas,genes $C$ and $P$ are necessary for colour in flowers. The flowers are white in the absence of either or both the genes. What will be the percentage of coloured flowers in the offspring of the cross $Cc\ pp \times cc\ Pp$ (in $\%$)?

Epistasis differs from dominance because.......

When an albino female plant of maize is crossed with a normal green male plant,all plants in the progeny are albino because:

When two non-allelic genes produce a new phenotype when present together, but fail to do so independently, what is this phenomenon called?

Extranuclear inheritance is observed in $.....$.