Cow embryos reveal new type of chromosome chimera

I've often wondered what happens between the time an egg is fertilized and the time the ball of cells that it becomes nestles into the uterine lining. It's a period that we know very little about, a black box of developmental ...

Research resolves old polymorphism puzzle

The coexistence within species of two or more different forms has puzzled biologists for more than a century. According to evolutionary theory, natural selection should remove inferior individuals from the population, and ...

Dad's genes build placentas, study shows

Though placentas support the fetus and mother, it turns out that the organ grows according to blueprints from dad, says new Cornell research. The study, published in the Proceedings of the National Academy of Sciences in ...

What did our ancestors look like?

A new method of establishing hair and eye colour from modern forensic samples can also be used to identify details from ancient human remains, finds a new study published in BioMed Central's open access journal Investigative ...

Mutation breaks HIV's resistance to drugs

The human immunodeficiency virus (HIV) can contain dozens of different mutations, called polymorphisms. In a recent study an international team of researchers, including MU scientists, found that one of those mutations, called ...

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