Solution: Only dominant traits are expressed in the first progeny of a monohybrid cross. So, the correct answer is (a) tallness is the dominant trait.
A cross between a tall plant (TT) and short pea plant (tt) resulted in progeny that were all tall plants because
i)tallness is the dominant trait
ii)shortness is the dominant trait
iii)tallness is the recessive trait
iv)height of pea plant is not governed by gene ‘T’ or ‘t’
i)tallness is the dominant trait
ii)shortness is the dominant trait
iii)tallness is the recessive trait
iv)height of pea plant is not governed by gene ‘T’ or ‘t’
A cross between a tall plant (TT) and short pea plant (tt) resulted in progeny that were all tall plants because
i)tallness is the dominant trait
ii)shortness is the dominant trait
iii)tallness is the recessive trait
iv)height of pea plant is not governed by gene ‘T’ or ‘t’
i)tallness is the dominant trait
ii)shortness is the dominant trait
iii)tallness is the recessive trait
iv)height of pea plant is not governed by gene ‘T’ or ‘t’