Question

How do mendal's experiment show that trait may be dominat or recessive?

Answer 1

hello dude



Mendel demonstrated that traitscan be either dominant or recessivethrough his monohybrid cross. He crossed true-breeding tall (TT) and dwarf (tt) pea plants. ... They appeared tall only because the tall trait wasdominant over the dwarf trait. Thisshows that traits may be dominant or recessive

Answer 2

Mendel experimented by crossing two pure homozygous tall and short plant.

• F1 progeny consisted of all 4 tall plants .
• after selfing F1 progeny , F2 progeny consisted of 3 tall plants and 1 short plant that is in the ratio 3:1.
• even though the  short trait was not expressed in F1 progeny it was still passed down to F2 progeny.
• this proves that in F1 progeny tallness was the dominant trait and hence none of the plants were short.
• but in F2 progeny , one plant's genotype was "tt" ( let T be tall and t be short) hence one plant was small.
• hence we can conclude that traits may be dominant or recessive.