Question

If a pea plant has a genotype SSTt, what are the possible genetic combinations that could be present in a single grain of pollen produced by the plant? (2 points)

SS, Tt, ST
ST, St, st
SS, Tt, ST, St
ST, St

Answer 1

I think it D ST st I hope this helps and it not to late

Answer 2

ST, St.

Step-by-step explanation:

As per the question, each cell of the pea plant is diploid and contain genotype SSTt. Thus each microspore mother cell in the anther is also had genotype SSTt. As a result of meiosis in the microspore mother cell, four haploid microspores or pollen grains are formed in the pea plant. As per Mendel’s law of segregation or purity of gametes, genotypically two types of pollen will form. Half of the pollen will have ST genotype and half of the pollen will have St genotype. Therefore, option D is correct.