Tag: "chromosome" at biology news
Jews are the genetic brothers of Palestinians, Syrians, and Lebanese
...r common ancestors. Specific regions of the Y chromosome
were analyzed in 1,371 men from 29 worldwide populations, including Jews and non-Jews from the Middle East, North Africa, sub-Saharan Africa, and Europe. The study, published in the May 9 issue of the Proceedings of the National Academy of Sci...
Images of evolution
...and colleagues looked for analogous chromosomes or chromosome
fragments in other mammalian species. The researc...hard and colleagues found, for example, that human chromosome
7 historically exists as two separate pieces in most non-primate mammals. They were able to determi...
Valuable Arabidopsis data released through unique public-private partership
...f an organism are typically used to map genes on a chromosome
and eventually isolate the gene to study its function. "This is an incredible resource," said Chris Somerville, director of plant biology at Carnegie. "No other organism has such a rich collection of polymorphisms accessible to the academic and no...
DNA details suggest how human chromosomes break, rearrange and cause a genetic disease
...s Hospital of Philadelphia continue exploration of chromosome
22 Philadelphia, Pa. -- Chromosome 22, one o...paper. "This model of the disease's origin in chromosome
structure is important not only for understanding +der(22) syndrome, but also may assist us in under...
Lasers to the aid of embryos
...find any higher risk of congenital malformation or chromosome
abnormalities. Our study shows that lasers provide the quickest, most effective and safest hatching technique," said Dr Kanyó. The research team concentrated on a special group of women where hatching can increase the pregnancy rate. They were d...
Artificial chromosomes could cure diseases
...ibes for the first time a mouse that passed such a chromosome
through three generations of descendants, apparent...hemical. The researchers started with a natural chromosome
gutted of all its functional genes but retaining other key elements (New Scientist, 23 October 1999,...
New developments in mouse genome biology
...vidence that humans have a corresponding region on chromosome
16, this discovery provides a treasure trove of genes for developmental science....
Scientists identify gene that causes fatal lung disease
... genes which were known to reside in the region of chromosome
2q linked to PPH. Lane recognized that BMPR2 is a member of the TGFb family. The first mutation of BMPR2 was demonstrated by DNA fingerprinting in the labs of Dr. John A. Phillips III, David T. Karzon Chair in Pediatrics. Other workers who participat...
Researchers decipher fundamental signal for maleness
...ve two X chromosomes. In flies, by contrast, the Y chromosome
does not determine maleness. Instead, sex is determined by the ratio of the number of the X chromosome
to the other chromosomes in the cell. This led to the idea that each type of body plan (such as thos...
Study on chromosome ends may aid cancer research
...nism that cells use to control the length of their chromosome
ends, a process that is thought to go awry in canc...s. The protein, called Pif1p, acts directly on the chromosome
ends, called telomeres, to keep the lengthening process in check, Zakian's research group reported. ...
Gene for Mucolipidosis IV discovered
...tial disease-causing region to a narrow stretch on chromosome
19, Ruth Bargal of Prof. Bachs laboratory paired up with scientists at the Weizmann Institute Crown Human Genome Center, headed by Prof. Doron Lancet. The team, which included Drs. Edna Ben-Asher, Nili Avidan, and Zvia Olender, identified the mucoli...
Review article highlights tiny motors driving cell division
...ical sets to form two daughter cells. A misstep in chromosome
division can result in birth defects, such as Down's syndrome; developmental defects, such as misshapen leaves; or lethal diseases, such as cancer. In this Thursday's issue of the journal Nature, a UC Davis research group studying the intricacies of ...
New mouse marks latest stride in muscular dystrophy research
...a boost when they discovered the genetic defect on chromosome
19 that causes myotonic dystrophy. But that knowledge hasn't helped them understand the disease as much as they had hoped, and more than a dozen attempts by scientists around the world to make mice with symptoms of the disease have fallen short. "A ...
Cattle, human genomes contain many identical genes
...f the comparative map revealed up to 149 conserved chromosome
segments in humans and cattle, including four whol...asis of the cattle-map position, and the number of chromosome
rearrangements during evolution resulting in the present organization of the cattle and human genome...
Paul Ehrlich challenges evolutionary psychology and the 'selfish gene' in his latest book, 'Human Natures'
... a major genetic defect - the presence of an extra chromosome
- can be greatly influenced by providing an affected child with a stimulating environment." Human Natures emphasizes that, while genetic evolution clearly has influenced human behavior, a much more important factor is cultural evolution - "changes in...
NSF boosts research for understanding structure and function of complex plant genomes
...n. A common change is an increase in the number of chromosome
copies in the nucleus, termed polyploidy. Many agriculturally important plants like maize and wheat are polyploid, and their history has had a profound impact on their genomes. The outcome of work funded at the University of Wisconsin at Madison wil...
Discovery of armored viruses may inspire new designs for nanotechnology
...e. A typical virus consists of little more than a chromosome
of DNA or RNA wrapped in a protein coat. Although viruses are among the simplest microbes, determining their molecular structure requires very sophisticated instrumentation. The authors of the Science study used special micro-imaging techniques to...
Researchers discover major diabetes susceptibility gene
...ricans and an unknown gene located near one end of chromosome
2, which they called NIDDM1. However, no one s...cule variation within a previously unknown gene on chromosome
2 that neatly segregated with disease susceptibility. The gene they tagged as NIDDM1 codes for a ...
Scientists discover gene required for testis development
...velopment. Although Dmrt1 maps to the position on chromosome
9 which is deleted in these patients, no definitive data has been able to link the gene and the disease. Until now. Raymond and colleagues made knockout mice which harbor a mutated form of Dmrt1. These Dmrt1 mutants failed to undergo postnatal t...
UC Davis and Lawrence Livermore National Laboratory seek industry partners to develop new bio and medical technology products
...ncer, Bio-MEMS (micro electro mechanical systems), chromosome
region-specific expressed gene in solution and applications in telemedicine. The IPC is a joint effort between UC Davis and Lawrence Livermore to form partnerships with industry. The goal of the consortium is to improve patient outcomes by developi...
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