Human reproduction is sexual reproduction that results in human fertilization to produce a human offspring. It typically involves sexual intercourse between a sexually mature human male and female.[1] During sexual intercourse, the interaction between the male and female reproductive systems results in fertilization of the ovum by the sperm to form a zygote.[1] While normal cells contain 46 chromosomes (23 pairs), gamete cells only contain 23 single chromosomes, and it is when these two cells merge into one zygote cell that genetic recombination occurs and the new zygote contains 23 chromosomes from each parent, giving it 46 chromosomes (23 pairs).[2] The zygote then undergoes a defined development process that is known as human embryogenesis, and this starts the typical 9-month gestation period that is followed by childbirth. The fertilization of the ovum may be achieved by artificial insemination methods, which do not involve sexual intercourse.[3] Assisted reproductive technology also exists.
^ abJones, Richard E. (1991), "The Male Reproductive System", Human Reproductive Biology, Elsevier, pp. 72–93, doi:10.1016/b978-0-12-389770-1.50008-1, ISBN 9780123897701
^"Gametogenesis – an overview | ScienceDirect Topics". sciencedirect.com. Retrieved 2022-09-12.
^Ombelet, W.; Van Robays, J. (2015). "Artificial insemination history: hurdles and milestones". Facts, Views & Vision in ObGyn. 7 (2): 137–143. ISSN 2032-0418. PMC 4498171. PMID 26175891.
and 25 Related for: Human reproduction information
Humanreproduction is sexual reproduction that results in human fertilization to produce a human offspring. It typically involves sexual intercourse between...
Shabbout, M.; Shaunik, A. (2006). "Baseline dimensions of the human vagina". HumanReproduction. 21 (6): 1618–1622. CiteSeerX 10.1.1.485.8802. doi:10.1093/humrep/del022...
Reproduction (or procreation or breeding) is the biological process by which new individual organisms – "offspring" – are produced from their "parent"...
2008). "The sperm chemoattractant secreted from human cumulus cells is progesterone". HumanReproduction. 23 (10): 2339–2345. doi:10.1093/humrep/den265...
The Voluntary Human Extinction Movement (VHEMT) is an environmental movement that calls for all people to abstain from reproduction in order to cause...
are numerous differences in typical secondary sex characteristics. Humanreproduction usually involves internal fertilization by sexual intercourse. In...
surrogate. According to recommendations made by the European Society of HumanReproduction and Embryology and American Society for Reproductive Medicine, a gestational...
HumanReproduction Program -UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in HumanReproduction (HRP)...
'virgin' + γένεσις, génesis, 'creation') is a natural form of asexual reproduction in which growth and development of an embryo occur directly from an egg...
The European Society of HumanReproduction and Embryology (ESHRE) was founded in 1985 by Robert Edwards (University of Cambridge) and Jean Cohen (Paris)...
have been researching and developing techniques to facilitate same-sex reproduction. The obvious[clarification needed] approaches, subject to a growing amount...
the reproduction of human cells and tissue. It does not refer to the natural conception and delivery of identical twins. The possibilities of human cloning...
2014). "The combined human sperm proteome: cellular pathways and implications for basic and clinical science". HumanReproduction Update. 20 (1): 40–62...
The Assisted HumanReproduction Act (French: Loi sur la procréation assistée) is law enacted by the Parliament of Canada. Its purpose is to regulate assisted...
Plant reproduction is the production of new offspring in plants, which can be accomplished by sexual or asexual reproduction. Sexual reproduction produces...
consists of a number of sex organs that play a role in the process of humanreproduction. These organs are located on the outside of the body, and within the...
Wilcox AJ (October 2013). "Length of human pregnancy and contributors to its natural variation". HumanReproduction. 28 (10): 2848–2855. doi:10.1093/humrep/det297...
The Center for HumanReproduction (CHR) is a fertility center located in New York City. It was founded by the obstetrician-gynecologist Norbert Gleicher...
Reference Re Assisted HumanReproduction Act is an appeal from the Quebec Court of Appeal to the Supreme Court of Canada on a reference question posed...
Assisted HumanReproduction Canada (AHRC) was a federal regulatory agency that was established in 2006 to protect and promote the health, safety, dignity...
gamete limitation, and the evolution of the two sexes". Molecular HumanReproduction. 20 (12): 1161–1168. doi:10.1093/molehr/gau068. PMID 25323972. Campbell...