How is sickle cell anemia an example of a pleiotropy? sickle cell anemia is caused by a pair of genes present on different loci of the same chromosome. sickle cell anemia shows a continuous variation in the population. sickle cell alleles affect various organ systems, such as the circulatory and respiratory systems. nextreset

Scientist research shows that our global climate is changing. ocean temperatures and acidity are increasing, and the global sea level is rising. which of the following best predicts an outcome of this global climate change in a marine ecosystem? a. more species will be able to survive due to the less extreme temperatures in the ocean b. the increased acidity will make more difficult for harmful bacteria to survive c. tectonic plate activity will increase and produce warmer ocean temperatures d. many marine species will not be able to adjust quickly enough to survive