The animal developmental program proceeds in a given precise pattern of space and time. This spatial and temporal pattern is controlled by a strikingly complex genomic regulatory system. Investigating ...

Yeast launched the genome era 6 and continues to be an informative model system for genomic and post-genomics technologies. It has also been a fruitful testing ground for mass spectrometry (MS)-based ...

Haploid embryonic stem cells (haESCs) have been established in many species. Differentiated haploid cell line types in mammals are lacking due to spontaneous diploidization during differentiation that ...

What establishes the male or female sex of an ant? In humans, it is X and Y chromosomes that assume this function: Women have two X chromosomes while men have one X and one Y chromosome. In ants, bees ...

Stem cell research holds huge potential for medicine and human health. In particular, human embryonic stem cells (ESCs), with their ability to turn into any cell in the human body, are essential to ...

The organs of a body are a spatial division of labour, one created by different genes being turned on or off in different cells. The same process serves to give individual lives a division of labour ...

A life cycle is a period involving one generation of an organism through means of reproduction, whether through asexual reproduction or sexual reproduction. In regard to its ploidy, there are three ...

A haploid cell with 23 chromosomes (left), and a diploid cell with 46 chromosomes (right). Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert!