Multiple Choice
Which of the following are examples of external factors that can cause mutations?
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15. Gene Expression
Mutations
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Why do certain mutations persist in a population even if they can be lethal?
A
They may provide a survival advantage in certain environments.
B
Mutations are always beneficial and increase genetic diversity.
C
Lethal mutations are always eliminated immediately from the gene pool.
D
Mutations are never passed on to the next generation.
Verified step by step guidance1
Understand that mutations are changes in the DNA sequence that can have various effects on an organism, ranging from beneficial to neutral to harmful.
Recognize that while some mutations can be lethal, others may confer a survival advantage in specific environments, allowing organisms with these mutations to survive and reproduce.
Consider the concept of natural selection, where advantageous mutations are more likely to be passed on to future generations because they increase the organism's fitness in its environment.
Acknowledge that genetic diversity, which includes a variety of mutations, is crucial for the adaptability and resilience of a population to changing environments.
Realize that not all mutations are immediately eliminated from the gene pool; some may persist if they provide a benefit or if they are recessive and do not affect the organism's survival in a heterozygous state.
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