When a pure‑bred tall pea plant (TT) is crossed with a pure‑bred dwarf plant (tt), what will be the phenotype of the entire F1 generation?

Step-by-step solution

1. Identify the genotypes of the parents: tall plant = TT, dwarf plant = tt.
2. During fertilisation each parent contributes one allele, so every gamete from the tall plant carries T and every gamete from the dwarf plant carries t.
3. All possible zygotes are therefore Tt.
4. Since T (tall) is dominant over t (dwarf), each Tt zygote shows the tall phenotype.
5. Hence every individual in the F1 generation is tall.

Concept tested: Mendel’s law of dominance

Published 23 August 2026 · How this solution was prepared and checked

Related questions

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