Tag Archive for 'Y chromosome'

The sex-linked orange mutation in domestic cats causes variegated patches of reddish/yellow hair and is a defining signature of random X inactivation in female tortoiseshell and calico cats; unlike the situation for most coat color genes, there is no apparent homolog for sex-linked orange in other mammals; Kaelin et al. show that sex-linked orange is caused by a 5-kb deletion that leads to ectopic and melanocyte-specific expression of the Arhgap36 gene. Image credit: Kaelin et al., doi: 10.1016/j.cub.2025.04.055.

Researchers Identify Genetic Mutation Responsible for Orange Coat in Domestic Cats

May 16, 2025 by News Staff

This mutation is located in the Rho GTPase Activating Protein 36 (Arhgap36) gene and appears to occur in no other mammal, according to a research team...

Kuitems et al. provide evidence that the Norse were active on the North American continent in the year 1021 CE. Image credit: Oscar C.R.

Viking Expansion into North Atlantic Was More Complex than Previously Thought

Nov 25, 2024 by News Staff

The Vikings played a preeminent role in the peopling of the North Atlantic, and one might expect populations that were founded by them to be genetically...

A Neanderthal father and his daughter. Image credit: Tom Bjorklund.

Ancient Genomes Provide Insights into Social Organization of Neanderthals

Oct 19, 2022 by Enrico de Lazaro

Paleoanthropologists have explored the social organization of Neanderthals using ancient nuclear, Y-chromosomal and mitochondrial DNA data from the remains...

Researchers Sequence First Pompeian Human Genome

May 27, 2022 by Enrico de Lazaro

Scientists from the United States, Italy, Denmark and Brazil have successfully sequenced the genome of a 35-40 year-old male who died in the ancient city...

Two common marmosets (Callithrix jacchus). Image credit: Dario Sanches.

Scientists Sequence Genome of Common Marmoset

Apr 29, 2021 by News Staff

Researchers from the Vertebrate Genomes Project have produced a chromosome-level, fully haplotype-resolved diploid genome assembly for the common marmoset...

A graphical abstract showing the six sex chromosomes found in Odorrana swinhoana. Image credit: Ikuo Miura.

Taiwanese Frog Has Six Sex Chromosomes, Study Shows

Apr 15, 2021 by News Staff

Biologists have found a multiple sex chromosome system comprising three different chromosome pairs in Odorrana swinhoana, a species of medium to large-sized...

Cechova et al. reconstructed the ancestral sequence of the great ape Y chromosome by comparing three existing (gorilla, human, and chimpanzee) and two newly-generated (orangutan and bonobo) Y chromosome assemblies. Image credit: Dani Zemba and Monika Cechova, Penn State University.

Researchers Sequence Y Chromosomes of Bonobos and Orangutans

Oct 7, 2020 by News Staff

The male-specific Y chromosome plays a critical role in sex determination and male fertility. However, because of its repetitive nature, it is frequently...

Neanderthal. Image credit: Neanderthal Museum.

Scientists Sequence Y Chromosome DNA of Denisovans and Neanderthals

Sep 25, 2020 by News Staff

The genomes of our closest relatives, Neanderthals and Denisovans, have been sequenced and compared with that of modern humans. However, most archaic individuals...

Reconstruction of a Neanderthal. Image credit: Neanderthal Museum.

Genetic Scientists Complete First Analysis of Neanderthal Y Chromosome

Apr 8, 2016 by Natali Anderson

Neanderthal Y-chromosome genes disappeared from the genome of modern humans long ago, suggests a new study published this week in the American Journal...

Essential parts of the polar bear Y chromosome have been decoded for the first time. Image credit: Axel Janke.

Genetic Researchers Decipher Essential Parts of Polar Bear Y Chromosome

Jul 28, 2015 by News Staff

A team of scientists at the Senckenberg Research Center for Biodiversity and Climate in Frankfurt, Germany, has reconstructed large parts of the male chromosome...

Asia’s peoples, Nordisk familjebok, 1904.

Many Modern Asian Men Have Genetic Links to Genghis Khan, Ten Other Dynastic Leaders

Mar 9, 2015 by News Staff

According to a new study reported in the journal European Journal of Human Genetics, millions of modern Asian men are descended from eleven dynastic leaders,...

Biblical Adam and Eve in the Garden of Eden by the Austrian painter Wenzel Peter

Mitochondrial Eve and Adam Could Have Met Between 148 – 120 Thousand Years Ago

Aug 2, 2013 by News Staff

Stanford researchers claim that our most recent common ancestors, known as mitochondrial Eve and Y-chromosomal Adam, roughly overlapped during evolutionary...

Chromosomes. Image credit: University of New Mexico.

Study Says Oldest Known Human Y-Chromosome Branch Dates to 338,000 Years Ago

Mar 4, 2013 by Sergio Prostak

An extremely rare African American Y chromosome found in an individual who submitted his DNA to a company specializing in DNA analysis to trace family...