Deletions of entire genes from the chromosome can be repaired by:  Group of answer choices restriction endonucleases genetic exchange and recombination excision repair exonuclease activity of DNA polymerase

Which DNA repair mechanisms makes use of recombination between a damaged strand of a DNA molecule and an undamaged strand? Group of answer choices postreplication repair nucleotide excision repair antioxidant repair mismatch repair all of these are DNA repair mechanisms

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…

The same restriction endonuclease must be used to excise the foreign DNA and bacterial DNA. Select one: True False