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No males? No problem for all-female fish species

No males? No problem for all-female fish species
From CBC - February 13, 2018

An all-female freshwater fishspecies called the Amazon molly that inhabits rivers and creeksalong the Texas-Mexico border is living proof that sexualreproduction may be vastly overrated.

Scientists said on Monday they have deciphered the genome ofthe Amazon molly, one of the few vertebrate species to rely uponasexual reproduction, and discovered that it had none of thegenetic flaws, such as an accumulation of harmful mutations or alack of genetic diversity, they had expected.

They found that the Amazon molly, named after the fiercefemale warriors of ancient Greek mythology, boasts a hardy
genetic makeup that makes it equally fit, or even more so, thanfish using sexual reproduction in which both maternal andpaternal genes are passed along to offspring.

Sperm stealer

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