LAC 28:XI.9778. Heredity: Inheritance and Variation of Traits

A. Identify that DNA molecules in all cells contain the instructions for traits passed from parents to offspring. B. Identify appropriate questions about the relationships between DNA and chromosomes and how traits are passed from parents to offspring. C. Identify a model showing evidence that parents and offspring may have different traits. D. Identify that meiosis is a process which distributes genetic material among the new cells (i.e., gametes) produced, which results in genetic variation. E. Identify that when DNA makes a copy of itself, sometimes errors occur that may lead to genetic variations. F. Identify examples of mutations in DNA caused by environmental factors. G. Use evidence to support a claim about a source of inheritable genetic variations. H. Calculate the probability (e.g., two out of four) of a particular trait in an offspring based on a completed Punnett square. I. Identify examples, using data, of environmental factors which affect the expression of traits, and so then affect the probability of occurrences of traits in a population.