If a corn 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?

Sstt. SStt and sstt

For this, you need to draw a Punnett square and cross two parents' Ss tt.

St and st on each parent's place and cross them (photo).

You'll have an offspring 25% SStt, 50% Sstt, and 25% sstt.

If you say that capital S is dominant characteristic over lowercase s, you'll have 75% chances of the offspring showing it and only 25% of the offspring showing the recessive one.

carbohydrates: (starches and sugars) composed of carbon, hydrogen, and oxygen.

lipids: (fats, oils, and waxes) are made of carbon and hydrogen atoms.

nucleic acids: contain hydrogen, oxygen, nitrogen, carbon, and phosphorus. they are polymers of nucleotides. a nucleotide has three parts, a 5-carbon sugar, a phosphate     (-po⬇️4) group, and a nitrogenous base.

proteins: made up of nitrogen, carbon, hydrogen, and oxygen. they are polymers of amino acids.