THE MOLECULAR BASIS OF INHERITANCE
GENE MUTATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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DNA repair
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Frameshift mutation
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Point mutation
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Allele fix
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Detailed explanation-1: -Nucleotide excision repair is another pathway used to remove and replace damaged bases. Nucleotide excision repair detects and corrects types of damage that distort the DNA double helix.
Detailed explanation-2: -Some of the mistakes are corrected immediately during replication through a process known as proofreading, and some are corrected after replication in a process called mismatch repair.
Detailed explanation-3: -Most damage to DNA is repaired by removal of the damaged bases followed by resynthesis of the excised region. Some lesions in DNA, however, can be repaired by direct reversal of the damage, which may be a more efficient way of dealing with specific types of DNA damage that occur frequently.
Detailed explanation-4: -Enzymes can repair a variety of genetic mutations before they affect how a cell functions. Some genetic mutations even have a positive effect on humans. Changes in how cells work can sometimes improve the proteins that your cells produce and allow them to adapt to changes in your environment.