For the mutations described below, categorize them in each of the following ways: [transition, transversion, insertion, or deletion]; [synonymous, missense, nonsense, frameshift, or regulatory]; [beneficial, deleterious, or neutral]

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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For the mutations described below, categorize them in each of the following ways: [transition, transversion, insertion, or deletion]; [synonymous, missense, nonsense, frameshift, or regulatory]; [beneficial, deleterious, or neutral]

a. A mutation in the SARS-CoV2 virus changes a codon in the gene encoding the spike protein from AAG to AAC. This mutation increases the ability of the virus to spread from person to person.

b. Becker muscular dystrophy results in progressive wasting of skeletal and heart muscle tissue. A patient is found to have a mutation in the dystrophin gene (DMD) in the first nucleotide of intron 25. Normally, a G is in this position, but the patient has an A.

c. Fur color in house cats is affected by several genes that encode pigment-producing enzymes. One such gene is found to have an additional C after position 45 in orange cats but not in black cats.

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