Figure 1: Amplification of complex gene libraries by conventional PCR and emulsion PCR. Figure 2: Ethidium bromide–stained agarose gels reveal the absence of size competition and chimeric produc ...

A gene known as HbS was the center of a medical and evolutionary detective story that began in the middle 1940s in Africa. Doctors noticed that patients who had sickle cell anemia, a serious ...

Because of their closed population stemming from a small number of German immigrants -- about 200 individuals -- the Amish carry unusual concentrations of gene mutations that cause a number of ...