What happened in Mendel's experiment when a pea plant received two different alleles for the same trait?

He did an experiment with a tall pea plant and a small pea plant. He then went through 2 generations of breeding of these plants and noticed 3 distinct different types of plants. One type was really short, the other was average height, and the final was Tall.

He combined 2 medium sized plants with each other (Tt) and (Tt).

*T = Tall gene.

*t = shortness gene.

Put that into you Punnett square and you will get these answers:

The small plant had a recessive gene (tt).

The medium sized plant had the average set of genes (Tt).

The tall plant also had a recessive gene (TT).

The results were:

1 Small Plant, 2 Medium Plants, and 1 Large Plant.
The recessive allele was hidden by the dominant allele
The recessive allele was hidden by the dominant allele.
the recessive allele was hidden by the dominant allele. (novanet)
The recessive allele was hidden by the dominant allele.

Novanet Swag
novanet:

The recessive allele was hidden by the dominant allele!