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Use a model to illustrate the role of cellular division (mitosis) and differentiation in producing and maintaining complex organisms.
Make and defend a claim based on evidence that inheritable genetic variations may result from (1) new genetic combinations through meiosis, (2) viable errors occurring during replication, and/or (3) mutations caused by environmental factors.
Ask questions to clarify relationships about the role of DNA and chromosomes in coding the instructions for characteristic traits passed from parents to offspring.
Apply concepts of statistics and probability to explain the variation and distribution of expressed traits in a population.