Multiple Choice
Which best describes chromosomal deletion?
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15. Gene Expression
Mutations
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Which of the following is an incorrect statement about genetic mutations?
A
Mutations always result in a change in phenotype.
B
Mutations can be passed on to the next generation if they occur in germ cells.
C
Mutations can occur spontaneously or be induced by external factors.
D
Mutations can be beneficial, neutral, or harmful.
Verified step by step guidance1
Understand the definition of a genetic mutation: A genetic mutation is a change in the nucleotide sequence of DNA, which can occur in any part of the genome.
Consider the statement 'Mutations always result in a change in phenotype': Recognize that not all mutations lead to a change in phenotype. Some mutations may occur in non-coding regions or may not affect the function of a protein, resulting in no observable change.
Evaluate the statement 'Mutations can be passed on to the next generation if they occur in germ cells': Understand that germ cells are reproductive cells, and mutations in these cells can be inherited by offspring.
Analyze the statement 'Mutations can occur spontaneously or be induced by external factors': Know that mutations can arise naturally during DNA replication or be caused by environmental factors such as radiation or chemicals.
Examine the statement 'Mutations can be beneficial, neutral, or harmful': Recognize that the effect of a mutation depends on its nature and context, and it can have a range of impacts on an organism's fitness.
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