It’s a common misconception that all hybrids are sterile.
While this is often true, there are exceptions.
For example, some femaleligers (lion × tiger hybrids) can produce offspring.
Plants Are a Special Case
Unlike animals, many plants can bypass these issues through polyploidy.
This is where entire sets of chromosomes are duplicated.
Polyploidy allows:
Homologous pairing of chromosomes.
Fertility in hybrids.
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Questions
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Question 1
Recap question
Which chromosomal change is most likely to act as a mechanism of reproductive isolation between two diverging populations?
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What happens when two species with different chromosome numbers interbreed?
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Note
Chromosomes are structures within cells that contain DNA and protein. They carry genetic information essential for the development, functioning, and reproduction of organisms. In sexually reproducing organisms, chromosomes exist in pairs called homologous chromosomes. Each pair consists of one chromosome from the mother and one from the father.
