Examlex
When a planet retrogrades, it appears to move westward.
Second Darwinian Revolution
A period of extended scientific research and discussion that further explores and builds upon Charles Darwin's theory of natural selection.
Nearsightedness
A common vision condition in which close objects appear clearly, but distant ones do not, also known as myopia.
Mutation
A random error in gene replication that leads to a change.
Epigenetic Mark
Chemical modifications to DNA or histones that change gene activity without altering the DNA sequence, affecting how genes are expressed.
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