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DNA and X and Y Chromosomes
By: Anna Guerrero
| Published: Feb 06, 2017
Y-chromosomes exist in the body cells of many kinds of male animals.
Y ChromosomeX chromosomeSex ChromosomesChromosomesSex Chromatin
Using Digital PCR to Detect Fetal Chromosomal Aneuploidy in Maternal Blood (2007)
By: Meilin Zhu
| Published: Nov 08, 2017
In 2007, Dennis Lo and his colleagues used digital polymerase chain reaction or PCR to detect trisomy 21 in maternal blood, validating the method as…
Polymerase chain reactionNucleic Acid Amplification TechniquesDown syndromeDNAAneuploidy
Calvin Bridges’ Experiments on Nondisjunction as Evidence for the Chromosome Theory of Heredity (1913-1916)
By: Kevin Gleason
| Published: May 18, 2017
From 1913 to 1916, Calvin Bridges performed experiments that indicated genes are found on chromosomes. His experiments were a part of his doctoral…
DrosophilaHeredityInheritance of acquired charactersColumbia University--Graduate studentsMutation
"Male Development of Chromosomally Female Mice Transgenic for Sry gene" (1991), by Peter Koopman, et al.
By: Troy Cox
| Published: Jan 28, 2014
Early 1990s research conducted by Peter Koopman, John Gubbay, Nigel Vivian, Peter Goodfellow, and Robin Lovell-Badge, showed that chromosomally…
Y ChromosomeTestisEmbryosChromosomesSex Chromosomes
“A Linkage Between DNA Markers on the X Chromosome and Male Sexual Orientation” (1993), by Dean H. Hamer and Charles A. Thomas.
By: Christina Nguyen
| Published: Apr 13, 2017
In 1993, Dean H. Hamer and colleagues in the US published results from their research that indicated that men with speicifc genes were more likely to…
HomosexualityMale homosexualityGeneticsX chromosomeGenetic sex determination
“A Sex Chromosome Anomaly in a Case of Gonadal Dysgenesis (Turner’s Syndrome)” (1959), by Charles Edmund Ford, K. W Jones, Paul E. Polani, J. C De Almeida, and J. H Briggs
By: Megha Pillai
| Published: Aug 06, 2024
In 1959, Charles Edmund Ford and colleagues published “A Sex Chromosome Anomaly in a Case of Gonadal Dysgenesis (Turner’s Syndrome),” hereafter “A…
Turner SyndromeGonadal DysgenesisGonadal Dysgenesis, XOGonadal Dysgenesis, 45, XAbnormalities, Sex Chromosome
Calvin Blackman Bridges (1889-1938)
By: Kevin Gleason
| Published: May 19, 2017
Calvin Blackman Bridges studied chromosomes and heredity in the US throughout the early twentieth century. Bridges performed research with Thomas…
DrosophilaHeredityInheritance of acquired charactersColumbia University--Graduate studentsMutation
Theophilus Shickel
Painter (1889-1969)
By: Dorothy Haskett
| Published: Nov 22, 2014
Theophilus Shickel Painter studied the structure and function of chromosomes in the US during in the early to mid-twentieth century. Painter worked…
ChromosomesKaryotypesSex ChromosomesGeneticsLinkage (Genetics)
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
Studies in Spermatogenesis (1905), by Nettie Maria Stevens
By: Troy Cox
| Published: Jan 22, 2014
Studies in Spermatogenesis is a two volume book written by Nettie Maria Stevens, and published by the Carnegie Institution of Washington in 1905 and…
LiteratureSpermatogenesisGenetic sex determinationSex DifferentiationEmbryos