Alleles are:
different molecular forms of a gene
heterozygotes
different phenotype
true breeding homozygotes
As learnt
Alleles -
Genes which code for a pair of contrasting traits are known as alleles.
- wherein
They are slightly different forms of the same gene.
Option 1)
different molecular forms of a gene
This option is correct
Option 2)
heterozygotes
This option is incorrect
Option 3)
different phenotype
This option is incorrect
Option 4)
true breeding homozygotes
This option is incorrect