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Question

All plants of a pure line have

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

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.

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