A cross between a tall plant (TT) and short plant (tt) resulted in progeny that were all tall plants because:(a) tallness is the dominant trait (b) shortness is the dominant trait
(c) tallness is the recessive trait (d) height of plant is not governed by gene T or t

Correct Answer: (a) tallness is the dominant trait

Explanation:

During a cross between tall plant (TT) and short plant (tt), progeny formed were all tall plants (Tt) because tallness trait is dominant over dwarfness (short) trait.