Question

write with the help of a unit square cross done with garden pea plant of pure tall and pure draught planet for f2 generation​
for 3 marks

Answer 1

Answer:

Explanation:

According to the question:

Parent generation TT (pure tall) x tt (pure dwarf)

gametes                   T                            t

F  

1

​  

 generation  Tt (heterozygous tall)

F  

2

​  

 generation

Gametes Tt--->

Tt  T  t

T  TT  Tt

t  Tt  tt

F  

2

​  

 Genotypic ratio =1 pure tall (TT) : 2 heterozygous tall (Tt) : 1 pure dwarf (tt); thus, the ratio of pure tall to pure short plants will be 1:1.