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Q1. Two genes of a flower, one controlling blue (B) versus white (b) petals and other controlling round (R) versus oval (r) stamens, are linked and are 10 map units apart. You cross a homozygous blue-oval plant with a homozygous white-round plant. The resulting F1 progeny are crossed with homozygous white-oval plants, and 1000 progeny are obtained. How various plants of each of the four phenotypes do you expect?

Q2. The pufferfish (fugu) contains poison tetrodotoxin. Several shellfish create a paralytic poison called saxotoxin. Both of these poisons block Na+ channels in neurons. What specific effects might these toxins have on neuron function?

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Category:- Biology
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