Question

what would be the ratio of the genetic makeup of progeny is obtained in F1 generation if a heterozygous tall plant is crossed with the dwarf pea plant

Answer 1

Tt×tt
Tt,Tt,tt,tt
ratio 1/1

Answer 2

(1) Genotype of Heterozygous tall plant is Tt as gene forTallness(T) is dominant on Gene for dwarfness(t)
(2) Genotype for dwarf plant is tt.
(3) Two types of Gametes will be formed by Heterozygous tall plants one carrying T and other carrying t .
(4) Dwarf plant will form only one type of gametes carrying t .
(5) Now when Heterozygous tall plant is crossed with dwarf plant:-
Tt x tt :- The ratio of genetic of genetic makeup of progeny obtained in F1 generation will be half Tt and half tt that is 1:1 .Hope it helps.