Question

How can we identify whether a plant is of TT or Tt?​

Answer 1

Explanation:

Testcross is a cross of any genotype showing dominant phenotype with a recessive homozygote to determine the genotype of a dominant parent if it is a heterozygous- or homozygous-dominant. Being a hybrid Tt shows dominant phenotype and tt is the recessive parent; it is a test cross. Option A is correct. Back cross is a cross between F

1

hybrid and any one of the parent (dominant or recessive) to deduce the genotype of both parents and the hybrid; here a hybrid “Tt” is crossed with recessive parents; it is a back cross. Option B is correct.

Answer 2

Explanation:

Heterozygous means an organism has two different alleles.for example a pea plant can have red flowers and can be heterozygous( red- white) or homozygous( red- red) if they have white flower then they are homozygous recessive ( as white is recessive trait)

hope it helped you :)