Why does a plant cell have a fixed shape and an animal cell does not? The cell membrane of a plant cell is surrounded by a cell wall.
O Plant cells have larger vacuoles than animal cells.
O The process of photosynthesis causes plant cells to have a rigid shape.

Gene flow and genetic drift both affect allele frequencies in a population. a high level of gene flow into a population genetic diversity in a population. a high level of gene flow out of a population genetic diversity in a population. genetic drift is the change in allele frequencies due to factors. typically, genetic drift has the biggest impact on populations.