Answer:
Crossing of F1 individual having dominant
phenotype with its homozygous recessive parent is called test cross. The test
cross is used to determine whether the individuals exhibiting dominant
character are homozygous or heterozygous.
Example: When a tall plant (TT) is
crossed with dwarf plant (tt) in the F1 generation only tall plant (Tt) appear
which is then crossed with homozygous recessive (tt) in a test cross.
In
the given diagram a test cross between tall heterozygous F1 hybrid
with dwarf homozygous recessive parent (P1) produces tall and dwarf
in equal proportion indicating that F1 hybrids are heterozygous.
You need to login to perform this action.
You will be redirected in
3 sec