Related topics: sperm · fertilizer · offspring · birds · embryos

New research shows how octopuses may have evolved

A new paper in Genome Biology and Evolution indicates that a type of octopus appears to have evolved independently to develop something resembling a shell, despite having lost the genetic code that produced actual shells ...

Scientists make embryos from non-egg cells

Scientists have shown for the first time that embryos can be made from non-egg cells, a discovery that challenges two centuries of received wisdom.

Older women more likely to conceive twins due to evolution

Women are more likely to conceive fraternal twins once they reach their 30s as a result of an evolutionary response to combat declining embryo viability, according to a new international collaboration involving researchers ...

Japan scientists grow drugs in chicken eggs

Japanese researchers have genetically engineered hens whose eggs contain drugs that can fight serious diseases including cancer, in a bid to dramatically reduce the cost of treatment, a report said Monday.

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