Question

True breeding Tall and Dwarf plants were crossed and total 600 plants were obtained
in F, generation. Find out the number of plants similar to F, plant in genotype?
(1) 150
(2) 300
(3) 450
(4) 50​

Answer 1

Answer:

Correct option is

B

1 : 2 : 1 - tall homozygous : tall heterozygous : dwarf

Mendel crossed pure tall plant(TT) with a pure dwarf plant(tt). In the F1 generation, tall plants are formed(Tt). When F1 plant is subjected to self pollination, in the F2 generation, 3 tall plants and 1 dwarf plants are formed. In the one homozygous tall plant (TT), 2 heterozygous tall plants(Tt), one homozygous dwarf plant(tt) are formed. Phenotypic ratio is 3:1, genotypic ratio is 1:2:1.

So, the correct option is ‘1:2:1 – tall homozygous:tall heterozygous:dwarf’.

Answer 2

Answer:

Maybe 3) 450. I do not know exactly