question archive Researchers asked a group of men to wear the same white T-shirt every day for a week
Researchers asked a group of men to wear the same white T-shirt every day for a week
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Researchers asked a group of men to wear the same white T-shirt every day for a week. They then collected the T-shirts and asked a group of women to rate them in order of best smell to worst smell. Genetic testing revealed that the women preferred the odor of the T-shirt worn by the men with the most genetic diversity in a gene related to immune function. The researchers concluded that offspring with parents heterozygous for this gene have stronger immune systems and are more likely to survive. Which evolutionary phenomenon is described by this story?
The heterozygote advantage
Natural selection
Artificial selection
Sexual selection
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The heterozygote advantage
Step-by-step explanation
The above story describes heterozygote advantage. Heterozygote advantage is expressed when the heterozygous genotype have a higher likelihood of fitness or survival than homozygous dominant or recessive genotypes. From the case above heterozygote advantage is expressed since the offspring with parents heterozygous for this gene have stronger immune systems and are more likely to survive.
