Question

Tall plant with round seeds (TTRR) is crossed with dwarf plant having wrinkled seeds (ttrr). $F_1$ plants are tall with rounded seeds. Types of gametes produced by them would be

• A. One
• B. Two
• C. Three
• D. Four

Answer 1

Answer: (D)

Four

A pure tall plant with round seeds(TTRR) is crossed to pure dwarf plant with wrinkled seeds(ttrr). The F₁ progeny TtRr is formed. When it is subjected to self pollination and self fertilization, four types of gametes are formed. They TR, Tr, tR, tr.

So, the correct option is ‘four’.