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The Carapacial Ridge of Turtles
By: Guido Caniglia
| Published: Jan 01, 2012
Two main elements characterize the skeletal morphology of turtles: the carapace and the plastron. For a turtle, the carapacial ridge begins in the…
TurtlesMorphology (Animals)EmbryosGerm CellsEmbryology
Apoptosis in Embryonic Development
By: Zane Bartlett
| Published: Jun 08, 2017
Apoptosis, or programmed cell death, is a mechanism in embryonic development that occurs naturally in organisms. Apoptosis is a different process…
ApoptosisGenetic regulationCaenorhabditis elegansCellsGerm Cells
National Association for Down Syndrome (1960–)
By: Grace Rauch
| Published: Dec 22, 2022
The National Association for Down Syndrome, or NADS, is an organization that was founded in 1960 by Kathryn McGee in Chicago, Illinois, to support…
OrganizationDown syndromeChildren with Down syndromeMothers of children with Down syndromeDown syndrome--Patients--Biography
Countdown to Life: The Extraordinary Making of You (2015), by the British Broadcasting Corporation and The Open University
By: Jessica Cartwright
| Published: Nov 21, 2017
In 2015, the British Broadcasting Corporation (BBC) partnered with The Open University to produce the three-part documentary series, Countdown to…
LiteratureConceptionGestationReproductionPhysiology
Edward B. Lewis (1918-2004)
By: Adam R. Navis
| Published: Nov 11, 2007
Edward B. Lewis studied embryonic development in Drosophila, including the discovery of the cis-trans test for recessive genes, and the…
PeopleDrosophilaBiography
Victor Ambros (1953-)
By: May Catherine, Justin M. Wolter
| Published: May 13, 2012
Victor Ambros is a professor of molecular medicine at the University of Massachusetts Medical School, and he discovered the first microRNA (miRNA) in…
PeopleRNAGenesEmbryosCaenorhabditis elegans
Beadle and Ephrussi's Transplantation Technique for Drosophila
By: Divyash Chhetri
| Published: Jun 29, 2014
Boris Ephrussi and George Wells Beadle developed a transplantation technique on flies, Drosophila melanogaster, which they described in their 1936…
TechnologyTissue ExtractsGenesTransplantation of organs, tissues, etc.Tissue Transplantation
Molecular Epigenetics and Development: Histone Conformations, DNA Methylation and Genomic Imprinting
By: Tristan Cooper-Roth
| Published: Sep 28, 2010
Introduced by Conrad Hal Waddington in 1942, the concept of epigenetics gave scientists a new paradigm of thought concerning embryonic development,…
EpigenomicsEpigenetics
Mechanistic Realization of the Turtle Shell
By: Guido Caniglia
| Published: Oct 10, 2011
Turtle morphology is unlike that of any other vertebrate. The uniqueness of the turtle's bodyplan is attributed to the manner in which the turtle's…
TurtlesEvolutionMorphology
Sex-determining Region Y in Mammals
By: Troy Cox
| Published: Dec 31, 2013
The Sex-determining Region Y (Sry in mammals but SRY in humans) is a gene found on Y chromosomes that leads to the development of male phenotypes,…
Y ChromosomeTestisEmbryosChromosomesSex Chromosomes