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1-Lois de Mendel.pdf

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Les croisements à plusieurs<br />

facteurs<br />

• Croisement lisse jaune x ridé vert<br />

• F 1 lisse jaune<br />

• F 2 on obtient le rapport:<br />

– 9 lisse jaune<br />

– 3 lisse vert<br />

– 3 ridé jaune<br />

– 1 ridé vert<br />

• Ceci s’explique par:<br />

P(A_B_) = 3/4 x 3/4 = 9/16…<br />

• Secon<strong>de</strong> loi <strong>de</strong> Men<strong>de</strong>l <strong>de</strong> l’assortiment aléatoire<br />

<strong>de</strong> <strong>de</strong>ux caractères<br />

23

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