Which of the following is an example of a selective sweep observed in the human genome? A) Sickle cell allele's impact on malaria susceptibility B) The genetic basis for eye color... Which of the following is an example of a selective sweep observed in the human genome? A) Sickle cell allele's impact on malaria susceptibility B) The genetic basis for eye color C) Blood type variations across cultures D) Height variation among populations
Understand the Problem
The question is asking for an example of a selective sweep in the human genome, which refers to a scenario where a beneficial allele increases in frequency due to natural selection, thereby reducing genetic diversity in nearby areas of the genome. The different options provided represent various genetic traits, and we need to identify which one is an instance of a selective sweep.
Answer
The sickle cell allele's impact on malaria susceptibility.
The final answer is the sickle cell allele's impact on malaria susceptibility.
Answer for screen readers
The final answer is the sickle cell allele's impact on malaria susceptibility.
More Information
Individuals who are heterozygous for the sickle cell trait are better protected against malaria, providing a selective advantage in malaria-endemic regions. This is a classic example of a selective sweep where a beneficial trait becomes more common in a population due to natural selection.
Sources
- AFRICAN GENETIC DIVERSITY: Implications for Human ... - pmc.ncbi.nlm.nih.gov
- Understanding rare and common diseases in the context of human ... - genomebiology.biomedcentral.com
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