Question

How do mendel's experiments show that traits may be dominant or recessive? Explain. (3 marks)

Answer 1

Mendel crossed tall pea plants with dwarf pea plants. He obtained tall plants in the F1 generation and when first generation was self crossed tall and dwarf pea plants were obtained in a ratio of 3 tall and 1 dwarf pea plants. This shows that the trait must be dominant over the dwarf trait in F1 generation so no dwarf plant was obtained and in F2 generation tall plants were 75% as compared to 25% of dwarf plants.