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

All cells have the same genetic information, but do not express the same genes. how is this possible? question 10 options: the differences are due to gene expression, which can be turned on and off. genetic material in a muscle cell is completely different from genetic material in a skin cell. genetic material is the same in all cells in the human body, except for reproductive cells. differences are due to major changes in genetic information from cell to cell.

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."

Crossing over is a method of (blank)?