Multiple Choice
Which of the following best describes a point mutation?
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17. Mutation, Repair, and Recombination
Types of Mutations
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Which type of genetic mutation is most likely to be detected using prenatal ultrasound imaging?
A
Frameshift mutations that do not affect organ development
B
Silent point mutations in coding regions
C
Large chromosomal deletions causing structural abnormalities
D
Single nucleotide substitutions in non-coding DNA
Verified step by step guidance1
Understand the types of genetic mutations listed: frameshift mutations, silent point mutations, large chromosomal deletions, and single nucleotide substitutions in non-coding DNA.
Recall that prenatal ultrasound imaging detects physical and structural abnormalities in the developing fetus, such as changes in organ size, shape, or presence.
Recognize that frameshift mutations and silent point mutations typically affect the DNA sequence at a small scale and may not cause visible structural changes detectable by ultrasound.
Note that single nucleotide substitutions in non-coding DNA usually do not result in visible anatomical abnormalities.
Conclude that large chromosomal deletions can cause significant structural abnormalities in organs or body parts, which are most likely to be detected by prenatal ultrasound imaging.
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