Plzz

what is wrong with this dna molecule?

Which of the following is an oxidation-reduction reaction? (pictured below)

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

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities