Morgan and his group observed that when genes are grouped on the same chromosome,some genes are very tightly linked and show:

Which of the following does not follow the law of independent assortment?

Total number of linkage groups in honeybee is . . . . . . .

Who mapped the position of genes on chromosomes by using the frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes?

Coupling and repulsion are the two faces of

Mendel studied seven pairs of traits in pea plants,which allow for $21$ possible combinations. If you are told that one of these combinations does not show independent assortment in a subsequent study,what would be your reaction?