Sex Chromosome Current Events | Sex Chromosome News
|
| Page
1 of
33 |
646 Results |
|
|
|
Sort By:
Page Views | Date |
Double identities lie behind chromosome disorders
Chromosome disorders in sex cells cause infertility, miscarriage and irregular numbers of chromosomes (aneuploidy) in neonates. A new study from Karolinska Institutet published in the scientific journal Nature Genetics shows how chromosome disorders can arise when sex cells are formed. view more (2007-07-09)
A new explanation for evolutionary changes in genetic sex-determination systems
In animals with separate sexes, embryos commit to becoming male or female at an early stage. Often this key decision is made by sex determination genes on the sex chromosomes. The genes involved in sexual development have changed remarkably little during evolution. In contrast, the sex determination genes and the sex chromosomes themselves are... view more... (2007-10-22)
Embryonic selection of sex avoids conceiving blind children
The Assisted Reproduction Unit at the Quirón Hospital in Donostia-San Sebastián has managed, for the first time in the Basque Country, to successfully carry out an embryonic sex selection in a woman who is a carrier of the disease Retinosis Pigmentaria, linked with the X chromosome - in order to avoid giving birth to a male child. view more (2006-12-19)
How do you know whether you are male or female?
New research published online this week in the open-access journal PLoS Biology investigates this basic and much-studied question in the fruit fly, and comes to a surprising new conclusion. view more (2007-12-27)
Evolution of genomic imprinting
How we come to express the genes of one parent over the other is now better understood through studying the platypus and marsupial wallaby - and it doesn't seem to have originated in association with sex chromosomes. view more (2007-09-07)
Small RNAs can play critical roles in male infertility/contraception
University of Nevada School of Medicine scientists in the Department of Physiology and Cell Biology have discovered insight into the reproductive workings of the male sex chromosome that may have significant implications for male infertility and contraception. view more (2009-04-10)
Genes from the father facilitate the formation of new species
The two closely related bird species, the collared flycatcher and the pied flycatcher, can reproduce with each other, but the females are more strongly attracted to a male of their own species. view more (2007-10-05)
Parental Smoking Around Time Of Conception Linked To Reduction In Male Births (p 1407)
Couples who smoke around the time of conception could have a reduced chance of conceiving male offspring, suggest authors of a research letter in this week's issue of THE LANCET. The male to female ratio of children has declined substantially over the past few decades. The reason for this reduction is not clear, but it has been suggested that... view more... (2002-04-17)
Geneticists Determine The Lack Of Chromosomes
A healthy person's genome contains 46 chromosomes, but an individual cell can contain less. Contemporary methods allow to determine the value of losses rather accurately. The Tomsk researchers' effort has been supported by the Russian Foundation for Basic Research. An average statistical cell of a healthy person contains 46 chromosomes. But a... view more... (2004-06-15)
The story of X -- evolution of a sex chromosome
In the first evolutionary study of the chromosome associated with being female, University of California, Berkeley, biologist Doris Bachtrog and her colleagues show that the history of the X chromosome is every bit as interesting as the much-studied, male-determining Y chromosome, and offers important clues to the origins and benefits of sexual... view more... (2009-04-17)
Fruit fly gene research may shed light on human disease processes
Those small fruit flies buzzing around your bananas are more than pests—they may be allies in a fruitful search for clues to human diseases caused when genes malfunction. view more (2007-03-28)
Fungi can tell us about the origin of sex chromosomes
Fungi do not have sexes, just so-called mating types. A new study being published today in the prestigious journal PLoS shows that there are great similarities between the parts of DNA that determine the sex of plants and animals and the parts of DNA that determine mating types in certain fungi. view more (2008-03-18)
Targeting the dosage compensation complex
Three independent research papers in the April 1 issue of G&D detail the chromosome-wide binding of the Drosophila dosage compensation complex (DCC) to the single male X chromosome, shedding new light on the mechanism of DCC targeting. view more (2006-03-17)
Sex hormone signature indicates gender rather than just chromosomes
Help with assigning gender could one day be at hand for intersex individuals whose genital phenotypes and sex chromosomes don't match, thanks to the discovery of a stable sex hormone signature in our cells. view more (2007-10-18)
Gene linked to lupus might explain gender difference in disease risk
In an international human genetic study, researchers at UT Southwestern Medical Center have identified a gene linked to the autoimmune disease lupus, and its location on the X chromosome might help explain why females are 10 times more susceptible to the disease than males. view more (2009-03-30)
Susceptibility To Psychotic Illness In Prader Willi Syndrome Linked To Gene On Chromosome 15 (p 135)
Authors of a research letter in this week's issue of THE LANCET-which investigated the occurrence of severe psychotic illness in adults with Prader Willi syndrome-suggest that susceptibility to psychotic illness in the general population could be influenced by genetic abnormalities on chromosome 15. view more (2002-01-11)
Two From One-Pitt Research Maps Out Evolution of Genders From Hermaphroditic Ancestors
Research from the University of Pittsburgh published in the Nov. 20 edition of "Heredity" could finally provide evidence of the first stages of the evolution of separate sexes, a theory that holds that males and females developed from hermaphroditic ancestors. view more (2008-11-21)
Sex talk revelations of the lonely Y chromosome
In the week that the University of Leicester celebrates the 25th anniversary of the discovery of DNA fingerprinting new findings from the world-renowned University of Leicester Department of Genetics reveal for the first time that the male and female do truly communicate -at least at the fundamental genetic level. view more (2009-09-11)
Is DNA Repair a Substitute for Sex?
Birds and bees may do it, but the microscopic animals called bdelloid rotifers seem to get along just fine without sex, thank you. What's more, they have done so over millions of years of evolution, resulting in at least 370 species. These hardy creatures somehow escape the usual drawback of asexuality - extinction - and the MBL's David Mark... view more... (2008-04-03)
X-Effect: Female Chromosome Confirmed a Prime Driver of Speciation
Researchers at the University of Rochester believe they have just confirmed a controversial theory of evolution. The X chromosome is a strikingly powerful force in the origin of new species. view more (2007-10-18)
|
|
| Page
1 of
33 |
646 Results |
|
|
|
Sort By:
Page Views | Date |
|
