The science which links heredity with environments is known as:

Why did Mendel's work remain unrecognized for a long time?

The number of chromosomes in the cells of bread wheat ($Triticum$ $aestivum$) indicates that it is ...... .

Which of the following variations are temporary and have nothing to do with the last or next generation?

The reason for the difference in genetic makeup in each animal species is:

Genes that are similar in phenotypic effect when present separately,but together interact to produce a different trait and the ratio is $9:7$ in the $F_2$ generation. What are such genes known as?