Archaeologists unearthed a human skull with a small dried fragment of the scalp still attached. they extracted a tiny amount of dna from the scalp tissue. to obtain sufficient dna for an analysis of the ancient human's genes, they could

They could amplify the DNA using a polymerase chain reaction. PCR involves the incubation of the same DNA with primers, DNA polymerase, and deoxyribonucleosides. With every cycle of the PCR, the amount of DNA in the solution doubles. Therefore, depending on how much DNA is required, the amount of PCR cycles can be set.

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.

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explanation: