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Made headlines again in 2019 for getting 13 women pregnant in just 26 days. [115] [116] 500+ Jonathan Jacob Meijer: Dutch musician who, in his 30s, may have fathered 200 children through sperm donation. The director of the Dutch Donor Child Foundation, told the Times that his offspring could number several hundred or even 1,000. [117]
This is an accepted version of this page This is the latest accepted revision, reviewed on 27 November 2024. Procreative biological processes of humanity Part of a series on Sex Biological terms Sexual dimorphism Sexual differentiation Feminization Virilization Sex-determination system XY XO ZW ZO Temperature-dependent Haplodiploidy Heterogametic sex Homogametic sex Sex chromosome X chromosome ...
In species that use the ZW sex-determination system the offspring genotype may be one of ZW (female), [28] [29] ZZ (male), or WW (non-viable in most species, [31] but a fertile, [dubious – discuss] viable female in a few, e.g., boas). [31] ZW offspring are produced by endoreplication before meiosis or by central fusion.
In biology, offspring are the young creation of living organisms, produced either by sexual or asexual reproduction. Collective offspring may be known as a brood or progeny . This can refer to a set of simultaneous offspring, such as the chicks hatched from one clutch of eggs , or to all offspring produced over time, as with the honeybee .
For example fecundity is the potential to for a female to become pregnant and carry that pregnancy to a live birth in demography, while in clinical medicine it refers to actual production of live offspring. Please help improve this article if you can. (March 2019) (Learn how and when to remove this message)
The Busby quintuplets were born on 8 April 2015, in Houston, Texas, to Adam and Danielle Busby. The five girls (Ava Lane, Olivia Marie, Hazel Grace, Riley Paige, and Parker Kate) are the first set of all female quintuplets born in the United States. Ava and Olivia are identical twins, and they have an older sister, Blayke.
Fish that have live-bearing offspring include the guppy and mollies or Poecilia. Fishes that give birth to live young can be ovoviviparous, where the eggs are fertilized within the female and the eggs simply hatch within the female body, or in seahorses, the male carries the developing young within a pouch, and gives birth to live young. [43]
Anisogamy is the form of sexual reproduction that involves the union or fusion of two gametes which differ in size and/or form. [12] The smaller gamete is considered to be male (a sperm cell), whereas the larger gamete is regarded as female (typically an egg cell, if non-motile).