Pcr is used to amplify a segment of dna and the enzyme responsible for the replication of dna is

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming

The fluid mosaic model of the membrane proposed that membranes

Which type of neuron stimulates muscles to contract?