For the expression of traits genes provide only the potentiality and the environment provides the opportunity. Comment on the veracity of the statement.
For understanding the genotype of an offspring which cross should be performed
What is the cross between the progeny of $\mathrm{F}_{1}$ and the homozygous recessive parent called? How is it useful?
Define and design a test - cross?
Mendel law is still true because
Mendel obtained recessive character in $F_{2}$ by ...$A$... the ...$B$... plants. Here $A$ and $B$ refers to