Multiple Choice
What is the primary function of DNA ligase during DNA replication?
20
views
14. DNA Synthesis
DNA Repair
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is the most likely consequence when a segment of DNA is missing from a chromosome?
A
A point mutation occurs, changing a single nucleotide in the DNA sequence.
B
A duplication mutation occurs, resulting in extra copies of the missing DNA segment.
C
A translocation mutation occurs, moving the missing DNA segment to another chromosome.
D
A deletion mutation occurs, which can lead to loss of genetic information and potentially disrupt gene function.
Verified step by step guidance1
Step 1: Understand the concept of a deletion mutation. A deletion mutation occurs when a segment of DNA is missing from a chromosome, leading to the loss of genetic material.
Step 2: Recognize the consequences of a deletion mutation. The loss of genetic information can disrupt the function of genes, especially if the missing segment contains coding regions or regulatory elements.
Step 3: Compare deletion mutations to other types of mutations mentioned in the problem. For example, a point mutation changes a single nucleotide, a duplication mutation results in extra copies of a DNA segment, and a translocation mutation moves a DNA segment to another chromosome. None of these describe the loss of a DNA segment.
Step 4: Evaluate why the correct answer is a deletion mutation. Missing DNA directly corresponds to the definition of a deletion mutation, which can lead to significant biological consequences, such as impaired protein production or loss of gene function.
Step 5: Conclude that the correct answer is a deletion mutation, as it accurately describes the scenario where a segment of DNA is missing from a chromosome.
Related Videos
Related Practice
