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Latest Cytogenetics Stories

Sex, Tools And Chromosomes
2012-04-12 10:28:06

Researchers at the University of California, Davis have discovered a key tool that helps sperm and eggs develop exactly 23 chromosomes each. The work, which could lead to insights into fertility, spontaneous miscarriages, cancer and developmental disorders, is published April 13 in the journal Cell. Healthy humans have 46 chromosomes, 23 from the sperm and 23 from the egg. An embryo with the wrong number of chromosomes is usually miscarried, or develops disorders such as Down's syndrome,...

2012-04-11 22:33:34

Findings provide tools for better understanding of the human genome Chromosomes are strands of DNA that contain the blueprint of all living organisms. Humans have 23 pairs of chromosomes that instruct how genes are regulated during development of the human body. While scientists have developed an understanding of the one-dimensional structure of DNA, until today, little was known about how different parts of DNA are folded next to each other inside the nucleus. Using a powerful DNA...

2012-03-20 09:41:12

Researchers from Huntsman Cancer Institute (HCI) at the University of Utah report they have discovered a method to identify cancer-causing rearrangements of genetic material called chromosomal translocations quickly, accurately, and inexpensively. A description of the method and the research results appear online in this month's issue of the EMBO Molecular Medicine journal. Many cancers result from chromosomal translocations in tumor cells. Hundreds of cancer-causing translocations have...

New Study Offers Evidence Against 'Rotting Y' Chromosome Theory
2012-02-23 06:04:12

Males of the world, fear not -- researchers have determined that the chromosome which determines maleness is not shrinking after all, and concerns that the gender could be headed for extinction are apparently unfounded. The study, which was led by Jennifer Hughes and David Page of the Whitehead Institute for Biomedical Research and the MIT Department of Biology, have compared the genes of the human Y chromosome to those of chimpanzees and rhesus macaques, according to Guardian Science...

Image 1 - Chromosome Analyses Of Prickly Pear Cacti Reveal Southern Glacial Refugia
2012-02-15 04:21:46

Analysis of chromosome number variation among species of a North American group of prickly pear cacti (nopales) showed that the most widespread species encountered are of hybrid origin. Those widespread species likely originated from hybridization among closely related parental species from western and southeastern North America. This study was published in the open access journal Comparative Cytogenetics. The prickly pear cacti (of the genus Opuntia) are endemic to the Americas. The genus...


Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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