In garden peas, height is determined by a single gene with tall being dominant to short. If two heterozygous plants are crossed, what proportion of the tall progeny will be homozygous dominant?

Dear student,
Please find below the answer:

Parents: Tt   x   Tt
Gametes: T, t

F₁ Generation:

	T	t
T	TT	Tt
t	tT	tt

There is only 1 offspring (out of 4) that is homozygous dominant. So, the proportion will be 1/4.

Hope this clears your doubt.
Regards.