Question

give one example of monohybrid and dihybrid cross? and explain how these traits get expressed​

Answer 1

Answer:

ANSWER

A cross between two types of plants of same species considering only the transmission of one character is called monohybrid cross. For example, a cross between tall pea plants and dwarf pea plant that is considering only the height of the parents is a monohybrid cross. It will result in the formation of tall offsprings but they will be hybrid.

Representation of the monohybrid cross: character in focus is the height

Parents-     TT   X   tt

              (Tall)        (dwarf)

F1-                     Tt

                  (Heterozygous tall)

On selfing:

                              Tt   X    Tt

F2-                    TT   Tt    Tt     tt

Phenotypic ratio- 3 tall: 1 dwarf

Genotypic ratio- 1 homozygous tall: 2 heterozygous tall: 1 homozygous recessive