When two different alleles of a gene are present in an individual,this condition is known as:

In Mendel's monohybrid cross experiment,what was the percentage of heterozygous genotypes in the $F_2$ generation?

Based on which experiment was the Law of Purity of Gametes given by Mendel?

How does inheritance of one gene take place?

$BB =$ alleles for black coat colour
$bb =$ alleles for brown coat colour
If the offspring of a cross between a black mouse $(BB)$ and a brown mouse $(bb)$ are allowed to interbreed,find the percentage of black-coated mice in the $F_2$ generation.

When experimenting with the factor of tallness in $Pisum$ $sativum$,Mendel obtained the results $73.97\%$ tall and $26.03\%$ dwarf from one of the crosses. This shows that the parents are: