Question

why do in nature do we find more tall pea plant than dwarf pea plant

Answer 1

Tall is a dominant character, and it generally masks the recessive character (dwarf) in F1generation.

A dominant character is the character which is expressed in the heterozygous condition. This means that whenever this character is present, it is expressed. So, whether it is present with any other character or the same character, it would be expressed.

A recessive character is the character which is expressed only in the absence of a dominant character. This means that this character is expressed only present in pairs. So, it is expressed only when both the recessive alleles of a gene are present. 

Answer 2

Answer: Tall pea plant is a dominant trait. This means that even if a plant carries a single copy of the gene (T) for height, then also it will express tall phenotype.

There can be three possible genotypes for the plant height which are TT, Tt, and tt.

Gene for tall plant is T and dwarf plants is t.

In nature, tall pea plant is found more because it is a dominant trait.

Mendel came to know this when he performed cross between pure breeding tall ( TT) and pure breeding dwarf plant ( tt). He observed that all the plants were tall in the F1 generation. Thus, he concluded that it is a dominant trait. Therefore, it is found more in the nature.