Quote:
Originally Posted by Darren Abbey
The effect is called "genetic linkage" and is caused by pairs of genes being close enough to each other that there is a reduced chance of them being independently inherited. The closer they are, the less likely they are to separate. The further away they are, the more likely they are to separate, up until they show no linkage at all.
Even two halves of the same gene will occasionally be swapped between chromosome pairs and thus get inherited independently. It's all about numbers and statistics.
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Thank you! I guess that's how they improved the corn so much over the last century,breeders just wiped out the bad genes by growing millions of plants.I got the wrong idea that some genes are linked so "hard" that they are always inherited together.