Question

What would be the proportion of dwarf plant with pink flowers. If heterozygous tall plant with pink flower is test crossed ? A plant taken for test cross character of length showing complete dominance and character of flower colour showing incompete dominance

• A. $4/16$
• B. $6/16$
• C. $3/16$
• D. None of these

Answer 1

The correct option is A $4/16$

Heterozygous tall plant with pink flower is test crossed with homozygous recessive partner, as a result of which different phenotypes are produced in the F1 offspring. The cross is between TtPp and ttpp which is shown in the Punnett Square.

Male/Female	TP	Tp	tP	tp
tp	TtPp	Ttpp	ttPp	ttpp

The percentage of dwarf plant with pink flowers (ttPp) is thus 4/16 or 1/4.

So the correct option is '4/16'.