Multiple choice

What happened when Mendel crossed two pure tall and dwarf pea plants?

  1. Both tall and dwarf plants were produced in F1 generation

  2. Only tall plants were produced in F1 generation

  3. Only dwarf plants were produced in F1 generation

  4. Plants of mixed characters were produced in F1 generation

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When Mendel crossed pure tall (TT) and dwarf (tt) pea plants, all F1 offspring were heterozygous (Tt) and displayed only the tall trait because tallness is dominant. The dwarf trait was recessive and masked in F1, reappearing only in F2 when the plants self-pollinated. This demonstrated Mendel's law of dominance.

Keep practicing — related questions