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Male crazy ants have two different sets of DNA in their bodies

A bizarre mode of reproduction discovered in yellow crazy ants results in males that have two separate sets of DNA in different parts of their body

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Life

Invasive Burmese python in Florida lays a record 96 eggs in one go

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An Antarctic petrel

Life

Freak storms stopped tens of thousands of birds breeding in Antarctica

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Changes to surrogacy laws must consider future reproductive technology

Health

Changes to surrogacy laws must consider future reproductive technology

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Sperm view under microscope, spermatozoa background, vector illustration eps10

Health

Male birth control drug is 100 per cent effective in mice

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Two orcas

Life

Orca mothers forgo future offspring to care for their full-grown sons

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Polycystic ovary syndrome

Health

A better understanding of PCOS offers fresh hope for new treatments

Features

Abdominal pain is a common endometriosis symptom

Health

Genetic map of cells linked to endometriosis could improve treatments

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Fruit fly

Life

Male flies produce a chemical that makes females sleep in after mating

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Fewer than expected boys were born in England and Wales three months after lockdown was introduced

Health

Fewer boys born in England and Wales in early stage of the pandemic

The covid-19 pandemic has been linked to a decline in the proportion of male babies being born, in line with previous findings that fewer boys are born after population-wide stressful events

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Life

Sperm move in packs like cyclists to push through thick vaginal fluid

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Life

Australian seagrass has cloned itself to cover 180 kilometres of coast

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Health

Rat pups born from sperm artificially produced from stem cells

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Life

Female wētā insects have two sets of genitals and eat male ejaculate

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