Multiple Choice
How does a single change in a nitrogen base alter the formation of a resulting protein?
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15. Gene Expression
Mutations
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Which change in DNA will cause a heritable germline mutation?
A
A mutation in a somatic cell
B
A mutation in a liver cell
C
A mutation in a skin cell
D
A mutation in a sperm or egg cell
Verified step by step guidance1
Understand the difference between somatic and germline cells: Somatic cells are all the cells in the body except for the reproductive cells, while germline cells are the reproductive cells (sperm and egg).
Recognize that mutations in somatic cells (such as liver or skin cells) are not passed on to offspring because these cells do not contribute genetic material to the next generation.
Identify that germline mutations occur in the DNA of sperm or egg cells, which are involved in reproduction and can be passed on to offspring.
Consider the implications of a mutation in a germline cell: If a mutation occurs in a sperm or egg cell, it can be inherited by the next generation, leading to a heritable genetic change.
Conclude that a mutation in a sperm or egg cell is the type of change in DNA that will cause a heritable germline mutation, as these cells contribute to the genetic makeup of the offspring.
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