how do Mendel experiment show that the traits may be dominant or recessive
Answers
(a) Mendel demonstrated that traits can be either dominant or recessive through his monohybrid cross. He crossed true-breeding tall (TT) and dwarf (tt) pea plants. ... They appeared tall only because the tall trait was dominant over the dwarf trait. This shows that traits may be dominant or recessive
Mendel crossed a tall pea plant and a short pea plant. The two traits present in the Tall pea plants were TT and in the short were tt. When they were crossed, it was seen that only tall plants appeared in the second generation (F2).
But, the cross involved traits from both the short and the tall pea plants. So, why were all the plants tall?
This is because the Tall (T) trait was dominant over the short trait (t). So, only tall plants appeared while short didn't.
This made Mendel conclude that traits may be dominant or recessive.
