Which statement is true about crossing over of genes? a. crossing over does not occur between genes that are far apart from each other on a chromosome. b. frequency of crossing over is related to the distance between linked genes. c. genes that are close to each other frequently cross over.

How is anaerobic respiration affected by changes in temperature? (5 points)based on the conditions of early earth, what conclusion can you draw about the amount of anaerobic respiration that was occurring at earth’s beginning? explain your answer.(5 points)if there was a sudden drop in temperature after the evolution of the first living cells, predict how that might have affected the changes in the atmosphere and the evolution of cyanobacteria and other autotrophs. explain your answer. (5 points)