The primer is needed during DNA replication because: A) it provides energy for making the new strand B) actually, primer is NOT needed because DNA polymerase can make DNA "from scratch" C) it helps DNA polymerase to bind to the DNA D) it serves as an existing nucleic acid to which DNA polymerase can add nucleotides to form the new strand E) it serves as the template for making the new strand

DNA polymerase occasionally incorporates the wrong nucleotide during DNA replication. If left unrepaired, the base-pair mismatch that results will lead to mutation in the next replication. As part of a template strand, the incorporated wrong base will direct the incorporation of a base complementary to itself, so the bases on both strands of the DNA at that position will now be different from what they were before the mismatch event. The MER-minus strain of yeast does not have a functional  mismatch excision repair system, but it has normal base excision repair and nucleotide excision repair systems. Which of the following statements is correct about differences in the mutation spectrum between MER-minus and wildtype yeast? More than one answer is correct. Options:   More point mutations will arise in MER-minus yeast.   Fewer point mutations will arise in MER-minus yeast as compared with wildtype.   Of the total point mutations that…

Which of the following is true about restriction endonucleases?a) Type I and II requires ATP to move along DNAb) Type I, II and III requires ATP to move along DNAc) Type II requires no ATP and cleaves DNA within recognition sequenced) Type II requires ATP and cleaves DNA within recognition sequence

Once the strands have been replicated, the enzyme DNA polymerase I “cleans up” by removing the primers. Why must the primers be removed? Finally, the enzyme DNA ligase finishes up. What does DNA ligase do?