An electrochemical gradient across the plasma membrane is created by transporting ions against their concentration gradients.

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

Acertain species of fish can have either long or short fins. the allele for long fins is dominant over the allele for short fins. a heterozygous, long-finned fish is crossed with a homozygous, short-finned fish. of the offspring, will have long fins and be , and will have short fins and be .

Northern switzerland has a fairly cold climate caused by sea winds from the atlantic ocean but souther switzerland tends to be much warmer and sunnier, what could cause this difference?