Board may also be used as a ï¬oor protector in. place of one layer of 3/8 thick millboard. For hearth extensions, see Speciï¬cation 3.6B. DUROCKÂ® Brand In addition to standard 1/2 DUROCK Brand Cement Board, DUROCKÂ® Brand Underlayment is available for ï¬oors and.
Genetic Blueprints. To map the chimp genome, researchers used DNA from the blood of a male common chimpanzee (Pan troglodytes) named Clint, who lived at the Yerkes National Primate Research Center in Atlanta. Clint died last year from heart failure at the relatively young age of 24. A comparison of Clint's genetic blueprints with that of the human genome shows that our closest living relatives share 96 percent of our DNA.
The DNA in the human Y chromosome is composed of about 59 million base pairs. The Y chromosome is passed only from father to son. With a 30% difference between humans and chimpanzees, the Y chromosome is one of the fastest evolving parts of the human genome. To date, over 200 Y-linked genes have been identified.