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Pyrimidine to pyrimidine mutations are ________, and purine to pyrimidine mutations are _______

Barriers to voting during Reconstruction: In some states, poorer, less literate white voters feared being disenfranchised by the literacy and understanding tests. Some states introduced a loophole, known as the ________ ______ , to allow less literate whites to vote. This exempted those who had been allowed to vote in that state prior to the Civil War and their descendants from literacy and understanding tests.

Which of the following does NOT contain intergenic DNA and introns?

Alpha-fetoprotein testing: 

What role do ddNTPs have in Sanger sequencing?

In the gel below, the DNA in Lane 1 is approximately

A mutation (AGT) was introduced into the protein-coding gene below. What primers were used to introduce this mutation? 5’-AACGAGAATGGCAAGTATGACAGATTTGAC-3’ 

Guanidium isothiocyanate is used when purifying RNA in order to 

What primers would you design to amplify the following sequence of DNA? 5’-AGCAGTTGAGCAGTTGAGTACTTAGGCCTGCAGTGTACTTAG-3’

Which technique uses enzymes naturally involved in unwinding DNA, and has potential in hand-held PCR devices?