Here's why:
* Alleles: These are alternative forms of a gene that determine a specific trait. For example, a gene for flower color might have an allele for purple flowers and another for white flowers.
* Homozygous: This means having two identical alleles for a trait. A homozygous plant could have two alleles for purple flowers (PP) or two alleles for white flowers (pp).
* Pure plant: This term signifies that the plant consistently produces offspring with the same trait as the parent plant. This is because the offspring will inherit one allele from each parent, and since the parent has two identical alleles, the offspring will also inherit two identical alleles.
In summary: A pure plant will have two identical alleles for a particular trait because it is homozygous for that trait. This ensures that the offspring will always inherit the same trait from the parent.
