Examlex
All stars are born with the same basic composition, yet stars can look quite different from one another. Which two factors primarily determine the characteristics of a star?
Epigenetic Effect
Changes in gene expression caused by mechanisms other than changes in the DNA sequence, influenced by environmental factors, behaviors, and lifestyle.
Chemical Marks
Biologically significant molecules that attach to DNA or proteins and play a role in gene expression and regulation.
DNA
Deoxyribonucleic acid, a molecule containing the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms and many viruses.
Rooting Reflex
An innate reflex in newborns, where they turn their head toward anything that strokes their cheek or mouth, searching for the object by moving their head in steadily decreasing arcs until the object is found.
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