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As journalist Naomi Klein documented in her book "Doppelganger: A Trip Into the Mirror World," the pandemic gave rise to large numbers of people arguing that infectious disease is good because it supposedly culls the weak from the gene pool.

Additionally, ancient adaptation signals can be masked by genetic drift -- random fluctuations in the frequency that genes appear -- and population mixing, which causes certain adaptive traits to disappear from the gene pool.

Imagine the gene pool of a species as a deck of cards.

But genetic traits are often associated with a person’s social identity – treating certain traits as unwanted in the human gene pool can be deeply discriminatory.

Some people see preventing the birth of people with certain genetic traits as a form of eugenics, the troubling practice of treating a social group’s genetic traits as unwanted and attempting to remove them from the human gene pool.