When Mendel carried out various crosses with respect to single gene inheritance, the traits of pea plant that disappeared in${\mathrm{F}}_1$ generation were 

A. Dwarf stems             B. Violet flowers              C. Inflated pods                                   D. Terminal flowers

detailed solution

Correct option is D

In Mendel’s experiments with respect to single character or singe gene inheritance out of the two contrasting traits for each character one trait named as dominant appeared in F1generation and another one disappeared in F1 but reappeared in F2 The dominant traits with respect to length of stem is Tall, Color of flower is violet, shape of pod is inflated and position of flower is axillary. The corresponding traits that disappeared and referred as recessive are dwarf, white flowers, constricted pods and terminal flowers.