Question

All plants of a pure line have

• A. Same genotype
• B. Similar phenotype
• C. Same phenotype and different genotype
• D. Same genotype and drastically different phenotypes

Answer 1

Answer: (A), (B)

The correct options are
A Same genotype
B Similar phenotype

A pure line is created by breeding the same plant many times over through self-pollination or selfing, so as to create many clones with the same genetic material. The phenotypic differences (variation) within a pure line is environmental and therefore non heritable, so phenotype is not exactly same for all plants. So, all plants that have a pure line have the same genotype but similar phenotypes.