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Latest Cytogenetics Stories

Seawater Contains DNA Of Marine Fish And Mammals
2012-08-31 07:49:07

April Flowers for redOrbit.com - Your Universe Online A half liter of seawater can contain evidence of local fish and whale faunas and combat traditional fishing methods, says a new study from the University of Copenhagen. Researchers there have created a new way for monitoring marine biodiversity and resources by using DNA traces in seawater samples. The results of this study are now published in the journal PLoS ONE. "The new DNA-method means that we can keep better track of life...

2012-08-13 15:50:34

A broken chromosome is like an unmoored beansprout circling in search of attachment. If a cell tries to replicate itself with broken chromosomes, the cell will be killed and so it would very much like to find its lost end. Often, it finds a workable substitute: another nearby chromosome. When a broken chromosome attaches to another, or when chromosomes use a similar process to exchange genetic material, you have a translocation — genes end up fused to other genes, encoding a new...

A Look At The Early Evolution Of Sex Chromosomes
2012-08-06 18:24:30

Two new studies offer insight into sex chromosome evolution by focusing on papaya, a multimillion dollar crop plant with a sexual problem (as far as growers are concerned) and a complicated past. The findings are described in two papers in the Proceedings of the National Academy of Sciences. The research reveals that the papaya sex chromosomes have undergone dramatic changes in their short evolutionary histories (they are about 7 million years old; by comparison, human sex chromosomes...

2012-05-29 12:14:05

Naphthalene is best known as the key ingredient in mothballs According to a new study, children exposed to high levels of the common air pollutant naphthalene are at increased risk for chromosomal aberrations (CAs), which have been previously associated with cancer. These include chromosomal translocations, a potentially more harmful and long-lasting subtype of CAs. Researchers from the Columbia Center for Children's Environmental Health (CCCEH) at the Mailman School of Public Health,...

Does Polyploidy Play A Role In The Italian Endemic Flora?
2012-05-22 08:24:01

Besides the obvious differences between plants and animals, subtle ones lie concealed within the cell, even within the nucleus. In both plant and animal cells, the nucleus contains DNA, which condenses into chromosomes during cell division. Chromosomes can be counted at that stage, revealing the chromosome number for each species. Here comes a difference: while the chromosome number spans a relatively short range across animal species (2-296: 46 in man), some plant species have over 1000...

2012-05-08 10:53:13

The study, published yesterday in the journal Proceedings of the National Academy of Sciences (PNAS), looked at how genes on sex-linked chromosomes are passed down generations and linked to fertility, using the specific example of the W chromosome in female chickens. The results confirm that although these chromosomes have shrunk over millions of years, and have lost many of their original genes, those that remain are extremely important in predicting fertility and are, therefore, unlikely...


Word of the Day
cenobite
  • One of a religious order living in a convent or in community; a monk: opposed to anchoret or hermit (one who lives in solitude).
  • A social bee.
This word comes from the Latin 'coenobium,' convent, which comes from the Greek 'koinobios,' living in community.
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