In a homozygous pea plant, axial flowers (A) are dominant over terminal flowers (a).
State Mendel’s Law of Dominance.
Topic: Law of Dominance
Answer
MENDEL’S LAW OF DOMINANCE states that when a pair of contrasting characters is present together in an organism, only ONE of them — the DOMINANT character — is able to express itself, while the other, the RECESSIVE character, remains suppressed. The recessive character can express itself only when both alleles of the pair are recessive (the homozygous recessive condition).
The essential words are that the recessive character is SUPPRESSED, not destroyed, and that it can appear only in the HOMOZYGOUS RECESSIVE state.
THE EVIDENCE is in parts (i) and (iii) of this very question: terminal flowers vanish completely in F1 and return in a quarter of F2. If the alleles had blended, they would have been lost for ever.
Mendel’s three laws as a set: DOMINANCE — only the dominant character shows in a hybrid SEGREGATION — the two alleles of a pair separate during gamete formation, each gamete receiving only one INDEPENDENT ASSORTMENT — different pairs of alleles are inherited independently of one another