While most animals reproduce sexually, some species rely solely on females for parthenogenetic reproduction. Even in these species, rare males occasionally appear. Whether these males retain ...

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Do Rare Males Retain Reproductive Function? While most animals reproduce sexually, some species rely solely on females for parthenogenetic reproduction. Even in these species, rare males occasionally ...

Traits are often lost during evolution, either because they are no longer beneficial or because they are too costly to maintain. When this happens, it is generally believed that the genes underlying ...

The Lord Howe Island stick insect vanished from its home, but an effort at zoos in San Diego and Melbourne highlights the possibilities and challenges of conserving invertebrate animals. Lord Howe ...

Among animals where sexual reproduction is common, there are quite a few species that reproduce only with females. In such species, females give birth to female offspring (this is called ...