Disadvantage of outbreeding?

Disadvantages of Outbreeding

1 The hybrid animal produced is not always fertile.
2 Outbreeding requires a transfer of gametes between individuals. If individuals are far , or if pollinators are less then   sexual reproduction may not occur at all in obligately outbreeding species.
3 Can destroy well-adapted genotypes because the offspring (genotypes) from sexual reproduction are not guaranteed to be viable, as is the case with selfing.

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