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Walter Stanborough Sutton (1877-1916)
By: Abhinav Mishra
| Published: Jun 27, 2014
Walter Stanborough Sutton studied grasshoppers and connected the phenomena of meiosis, segregation, and independent assortment with the chromosomal…
ChromosomesHeredityBoveri, Theodor, 1862-1915Wilson, Edmund B. (Edmund Beecher), 1856-1939Genetics
China's First Baby Conceived through In Vitro Fertilization-Embryonic Transfer, by Zhang Lizhu's Research Team
By: Lijing Jiang
| Published: Apr 27, 2011
On 10 March 1988, China's first baby conceived through human in vitro fertilization (IVF) and embryo transfer (ET), commonly referred to as a test-…
ReproductionExperimentsFertility
"On the Origin of Mitosing Cells" (1967), by Lynn Sagan
By: Dorothy Regan Haskett
| Published: Apr 15, 2014
On the Origin of Mitosing Cells by Lynn Sagan appeared in the March 1967 edition of the Journal of Theoretical Biology. At the time the article was…
LiteratureMitosisEndosymbiosisflagellasymbiosis
Christian Peeters and Bert Hölldobler's Experiments on Reproduction in Indian Jumping Ants (1991–1994)
By: Kelle Dhein
| Published: Mar 23, 2017
Between 1991 and 1994, Christian Peeters and Bert Hölldobler studied the reproductive behaviors of the Indian jumping ant (Harpegnathos saltator), a…
AntsPoneraInsectsWorkers (Insects)Queens (Insects)
"On the Nature of the Process of Fertilization and the Artificial Production of Normal Larvae (Plutei) From the Unfertilized Eggs of the Sea Urchin" (1899), by Jacques Loeb
By: Steve Elliott
| Published: Jun 10, 2010
Jacques Loeb developed procedures to make embryos from unfertilized sea urchin eggs in 1899. Loeb called the procedures "artificial parthenogenesis…
ParthenogenesisExperimentsSea Urchins
"Transplantation of Living Nuclei from Blastula Cells into Enucleated Frogs' Eggs" (1952), by Robert Briggs and Thomas J. King
By: Nicole Newkirk
| Published: Nov 13, 2007
In 1952 Robert Briggs and Thomas J. King published their article, "Transplantation of Living Nuclei from Blastula Cells into Enucleated Frogs' Eggs…
Cell nuclei--TransplantationNuclear Transfer TechniquesExperimentsNuclear TransplantationTransplantation
Marcello Malpighi (1646-1694)
By: Cera R. Lawrence
| Published: Sep 12, 2008
Marcello Malpighi studied chick embryos with microscopes in Italy during the seventeenth century. Trained as a medical doctor, he was among the first…
MicroscopyHistologyChick Embryo
Francesco Redi (1626-1698)
By: Kimberly A. Buettner
| Published: Nov 01, 2007
Francesco Redi, son of Florentine physician Cecilia de' Ghinci and Gregorio Redi, was born in Arezzo, Italy, on 18 February 1626. He studied…
Biography
The Whelan Method of Sex Selection
By: Alysse Blight
| Published: Jun 09, 2018
The Whelan Method of Sex Selection is a method for increasing a couple’s probability of conceiving an infant of the desired sex through timing…
TechnologySex PreselectionGenetic sex determinationConceptionFertilization
Symptoms Associated with Polycystic Ovarian Syndrome (PCOS)
By: Alexis Darby
| Published: Dec 19, 2017
Polycystic ovarian syndrome or PCOS is one of the most common reproductive conditions in women, and its symptoms include cystic ovaries, menstrual…
Polycystic ovary syndromeHirsutismOligomenorrheaMenstruation DisturbancesAmenorrhea