What are the chances of a chestnut, pacer foal

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Q1. In horses, black coat colour is dominant over chestnut. In gait, trotting is dominant over pacing. If a mare with a genotype of bbTt is bred to a stallion with a genotype of BbTt, what are the chances of a chestnut, pacer foal?

Q2. In Darwin's day, people believed in a "fluid" or "blending" model of heredity. Why will such the system not support much evolution by natural selection?

Reference no: EM137178

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