Meiosis II, Non-Disjunction, and Comparison with Mitosis
Students will investigate how environmental factors such as light intensity, carbon dioxide concentration, and temperature affect the rate of photosynthesis.
About This Topic
Students will investigate how environmental factors such as light intensity, carbon dioxide concentration, and temperature affect the rate of photosynthesis.
Key Questions
- Compare the chromosomal and molecular events of meiosis II with those of mitosis, explaining why meiosis II is described as an equational division and why it produces haploid cells from haploid precursors rather than restoring diploidy.
- Analyse how non-disjunction in meiosis I versus meiosis II produces different patterns of chromosomal abnormality in the resulting gametes, and predict the chromosomal constitution of offspring produced by fertilisation with each type of non-disjunction gamete.
- Evaluate the combined significance of crossing over, independent assortment, and random fertilisation for the generation of genetic variation, explaining why sexual reproduction accelerates evolutionary adaptation relative to asexual reproduction.
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