The person famous for experimental genetics is:

To determine whether $F_1$ hybrid is homozygous or heterozygous for a particular trait,a . . . . . . cross is performed.

Mendel observed that all $F_1$ progeny plants:

The production of gametes by the parents,the formation of zygotes,and the $F_1$ and $F_2$ plants can be understood using:

Mendel published his work on the inheritance of characters in .......... but it remained unrecognized until the year ........ for several reasons.

How many pairs of contrasting characters in pea plants were chosen by Mendel?