News articles tagged with 'chromosome' (Page 33)
A genetic identity card for Plasmodium populations to improve control strategies
— 8 Nov 2007 19:00 | BiologyWho figures show that malaria currently affects between 300 and 600 million people in various parts of the world. Several malaria-hit regions are experiencing an advance of the disease…
A sex-ratio meiotic drive system in Drosophila simulans
— 6 Nov 2007 08:28 | BiologyIf you met a person who had 10 children, all of whom were girls, you would probably find this surprising. Yet this kind of distorted sex ratio does occur in groups as diverse as mammals,…
A new explanation for evolutionary changes in genetic sex-determination systems
— 20 Oct 2007 17:12 | BiologyIn 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…
Female chromosome confirmed a prime driver of speciation
— 18 Oct 2007 10:28 | BiologyResearchers 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…
Genes from the father facilitate the formation of new species
— 5 Oct 2007 12:54 | BiologyThe 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…
Mystery behind how nuclear membrane forms during mitosis solved
— 10 Sep 2007 15:37 | BiologyJust how a dividing cell rebuilds the nuclear envelope, the protective, functional wrapping that encases both the original and newly copied genetic material, has been a source of controversy…
Scientists harvest answers from genome of grain fungus
— 7 Sep 2007 14:42 | EnvironmentEvil forces thrive in an unstable environment. At least, that's the picture being painted in the first waves of data being reaped from the genomesequence of the fungal plant pathogen,…
Evolution of genomic imprinting
— 7 Sep 2007 14:42 | BiologyHow 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…
Sea anemone genome provides new view of our ancestors
— 6 Jul 2007 03:11 | BiologyThe first analysis of the genome of the sea anemone shows it to be nearly as complex as the human genome, providing major insights into the common ancestor of not only humans and sea…