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Meiosis, inheritance and genetic crosses

Inheritance, variation and populations · Lesson 2 of 4

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Lesson 2 of 4 · Inheritance, variation and populations

Meiosis, inheritance and genetic crosses

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Explain the stages and significance of meiosis, including chromosome replication before meiosis, homologous chromosome pairing, separation of homologous chromosomes in the first division, separation of sister chromatids in the second division, and the production of haploid cells.
Explain how meiosis contributes to variation through independent assortment and, where specified within the course, crossing over.

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Use genetic diagrams to predict the outcomes of monohybrid crosses involving complete dominance, codominance and multiple alleles where required by the specification.

Interpret family pedigrees and other inheritance data to determine likely genotypes, patterns of inheritance and the probability of inheritance of a characteristic.

Calculate and interpret expected ratios and probabilities in genetic crosses, and distinguish between expected and observed results.

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