In the process of replicating themselves, cells have another choice: do they want to make an identical copy and be left with two cells? Or do they want to make four “half-copies”, in preparation for ...

DNA does not float freely in the cell. Instead, it is wrapped around histone proteins to form structures called nucleosomes.

Oogenesis is the development of the mature female germ cells called egg cells or ova. Primordial germ cells, the founder cells of the germ line, develop through several immature stages by undergoing ...

Interphase The cell spends most of its life in this phase. The DNA in chromosomes copies itself ready for mitosis. Prophase The DNA in chromosomes and their copies condenses to become more visible.

A majority of Americans think abortion should be legal in all or most cases, but there is a gap between men and women on the ...

Researchers are gaining a new appreciation for the genes on the X and Y chromosomes and how they shape sex differences in ...

The Cascio siblings are suing Mr. Jackson’s estate after standing by him for years as he faced accusations of child ...

Genome duplication probably gave biodiversity a decisive evolutionary boost. A Chinese-German research team led by Axel Meyer ...

Amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD) can have the same genetic cause, a discovery that won ...

Steven Mills and Tiffany Score, who gave birth to the baby, said, "we will love and will be this child’s parents forever." ...