Heterozygous purple flower is crossed with recessive white flower. The progeny has the ratio
All purple
All white
$50\%$ purple, $50\%$ white
$75\%$
Which one of the following cannot be explained on the basis of Mendel’s law of dominance?
Punnett square was developed by
Cross between the pure tall plant from $F_1$ and dwarf plant will give
A cross between a homozygous recessive and a heterozygous plant is called
Define and design a test - cross?