Related topics: genes · females · pregnancy · eggs · parents

'Old' sperm produces healthier offspring

Sperm that live for longer before fertilising an egg produce healthier offspring—according to new research from the University of East Anglia and Uppsala University in Sweden.

Fish fertilize eggs in their male relatives' nests

Male cichlid fish sometimes fertilize eggs in nests belonging to one of their male relatives, a behaviour that is counter-intuitive yet ultimately beneficial, according to a study published in BMC Biology.

A single gene turns socially organized bees into social parasites

A small change in the genetic makeup of the South African Cape bee turns the socially organised animal into a fighting parasite. This change ensures that infertile worker bees begin to lay their own eggs and fight other colonies. ...

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Offspring

In biology, offspring is the product of reproduction, a new organism produced by one or more parents.

Collective offspring may be known as a brood or progeny in a more general way. This can refer to a set of simultaneous offspring, such as the chicks hatched from one clutch of eggs, or to all the offspring, as with the honeybee.

Human offspring (descendants) are referred to as children (without reference to age, thus one can refer to a parent's "minor children" or "adult children"); male children are sons and female children are daughters. See kinship and descent.

The word "fetus" is derived from the Latin word for "offspring." In humans, the fetal stage begins eight weeks after conception, when all of the major organs have been formed.

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