Mutations in General
About the Lecture
The lecture Mutations in General by Georgina Cornwall, PhD is from the course DNA Repair & Genetic Mutations.
Included Quiz Questions
Which of the following is TRUE of a point mutation?
- They occur from a change in one DNA base pair.
- They occur when large regions of the chromosomes are deleted.
- They occur when a codon is deleted.
- They occur when a transposon is inserted in the middle of a gene.
- They occur when an extra copy of a chromosome is present in a cell.
Which of the following is TRUE regarding sickle-cell anemia?
- It leads to the formation of an abnormal deoxygenated hemoglobin tetramer chain that causes red blood cells to take up a sickle shape.
- It leads to a sudden decrease in the oxygen-carrying capacity of white blood cells in humans.
- It leads to an abnormality in immunoglobin protein structures in patients with cancer.
- It results from the substitution of aspartic acid for valine in the β-globin chain.
- It is a gene defect caused by a nonsense mutation of two base pairs of the β-globin gene.
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Author of lecture Mutations in General
Georgina Cornwall, PhD
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