Question: Alloploids are produced by crosses involving two different species. Explain why alloploids may be reproductively isolated from the two original species from which they were

Alloploids are produced by crosses involving two different species. Explain why alloploids may be reproductively isolated from the two original species from which they were derived. Explain why alloploids are usually sterile, whereas allotetraploids (containing a diploid set from each species) are commonly fertile.

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