How are alleles alleles and traits related?

The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions

Why do we perceive objects as retaining their brightness under different lighting levels?

How much time has elapsed from the very beginning of "the memior of the conquistador bernal diaz del castillo" to the end? a. castillo's whole life b. a quarter of an hour c. a few weeks d. a decade