Answer:
The correct answer is option D. TT.
Explanation:
Homozygous condition is where both of the alleles are the same and express the character if present together. The homozygous condition can be dominant or recessive accordingly.
In this case of Both having TT is the dominant case of homozygous alleles. The offspring of two parents with homozygous dominant. Every parent produce gamete T and the cross between them is -
T T
T TT TT
T TT TT
Thus, the correct answer is option D.b TT