Question

A homozygous tall plant (T) bearing red coloured (R) flowers is crossed with a homozygous dwarf plant (t) bearing white (r) flowers.​
(v) What is the phenotypic ratio obtained in $F_2$ generation?​

Answer 1

TtRr​ TtRr​	TR ​	Tr​	tR​	tr​
TR​	TTRR​ (tall plant, red flower)​	TTRr​ (tall plant, red flower)​ ​	TtRR​ (tall plant, red flower)​ ​	TtRr​ (tall plant, red flower)​ ​
Tr​	TTRr​ (tall plant, red flower)​ ​	TTrr​ (tall plant, white flower)​ ​	TtRr​ (tall plant, red flower)​ ​	Ttrr​ (tall plant, white flower)​ ​
tR​	TtRR​ (tall plant, red flower)​ ​	TtRr​ (tall plant, red flower)​ ​	ttRR​ (dwarf plant, red flower)​ ​ ​	ttRr​ (dwarf plant, red flower)​ ​
tr​	TtRr​ (tall plant, red flower)​ ​	Ttrr​ (tall plant, white flower)​ ​	ttRr​ (dwarf plant, red flower)​ ​	ttrr​ (dwarf plant, white flower)​

F2​ generation phenotypic ratio-​

9 tall plant, red flower: 3 tall plant, white flower: 3 dwarf plant, red flower: 1 dwarf plant, white flower.​