The first "geneticist" was

Define / Explain: $True \ breeding \ line$.

Two alternative forms of a gene or alleles are located on . . . . . . .

When a homozygous tall plant is crossed with a homozygous dwarf plant,what is the percentage of dwarf progeny obtained in the $F_1$ generation by Mendel (in $\%$)?

Genes are not found in pairs in.....

Mendel's results on the inheritance of characters were rediscovered by