In his classic experiments on pea plants,Mendel did not use .......... .

Define/Explain: Genotype.

$A$ heterozygous purple flower is crossed with a recessive white flower. What is the ratio of the progeny?

Which of the following traits of pea plants studied by Mendel was recessive?

Some pure black mice were mistakenly mixed with hybrid black mice. The quickest way to discover whether one individual black mouse is pure is:

The cause of variation is hidden in the process of $.....P.....$ - this knowledge was acquired by humans in $.....Q.....$.
$\quad \quad P \quad\quad\quad Q$