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Tall Dents

Posted on Thursday, April 1, 2010 in Collectibles

Mendel's experiment - biology?

In Mendel's experiments, the spherical seed character (SS) is completely dominant over the dented seed character (ss). If the characters for height were incompletely dominant, such that TT are tall, Tt are intermediate and tt are short, what would be the phenotypes resulting from crossing a spherical-seeded, short (SStt) plant to a dented-seeded, tall (ssTT) plant

Answer
All the progeny would have dented seeds and be tall
All progeny would have spherical seeds and be short
½ of the progeny would have spherical seeds and be short, ½ would have speherical seeds and be tall
All would have dented seeds and be of intermediate height
All would have spherical seeds and be of intermediate height

cross each one first to see the possible combination:
SStt = St, St, St, St
ssTT = sT, sT, sT, sT

then do a punnet square 4x4 and you get all SsTt
therefore, all the progeny would have round seeds and will be intermediate height

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