Homework Help: Biology

Posted by martini on Tuesday, October 18, 2011 at 11:02pm.

A lilly from a true-breeding line with white flowers and short corollas (line A) is crossed to a lilly from a true-breeding line with black flowers and long corollas (line B). The resulting offspring, the F1, are all red-flowered, with corollas of medium length.

a) Suppose an individual from the F1 is crossed to an individual from line A. The resulting offspring are as follows: 50% white flowers and short corollas, 50% red flowers and medium corollas. What type of allelic interaction is this? How many loci are involved? Diagram the cross.

b) What is the term for when one locus affects two or more traits? In the scenario above, how many types of gametes can the F1 plants make?

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