Which of the following is the functional unit of inheritance?

Gametes produced by a homozygous individual is/are of .... types.

In Mendel's experiments,seed coat color,flower nature,flower position,pod color,and stem height are referred to as:

$A$ test cross is carried out to

$A$ disease is caused by a dominant gene,but it shows only $20\%$ penetrance. $A$ heterozygous man marries a homozygous normal woman. What proportion of the children in the population is expected to have the disease?

$A$ black hybrid mouse is crossed with a pure brown mouse to produce a total of $24$ young ones. Which of the following result is most likely to be correct?