On this page you will find The significance of meiosis Grade 12 Life Sciences Notes under Meiosis, which includes revision activities with questions and answers to help grade 12 learners to prepare for their tests and exams.
Notes
There are two reasons why meiosis is important.
- It reduces the number of chromosomes by half, in other words from diploid to haploid. This ensures that sex cells have half the number of chromosomes of other somatic cells so that when fertilisation occurs the zygote formed has the correct number of chromosomes. It balances the doubling effect of fertilisation.
- Crossing over introduces genetic variation. Genetic variation results in offspring that are better adapted to a particular environment and ensures that they will have a better chance of survival.
PDF Downloadable Notes on The significance of meiosis:
Question and Answers Activities:
Find short and long questions for Grade 12 Life Sciences, which will help you to prepare for the exams, tests, practical tasks, and assignments.
More Resources
- https://www.elimuza.com/grade-12/item/1037-meiosis-life-sciences-study-guides-and-notes-grade-12
- https://www.studocu.com/en-za/document/further-education-and-training/life-sciences/grade-12-life-science-meiosis-fet-phase/17623978
- https://www.yourgenome.org/facts/what-is-meiosis
- https://learn.mindset.africa/resources/life-sciences/grade-12/meiosis
Meiosis Notes: What is meiosis, The process of meiosis in animal cells, The significance of meiosis, Abnormal meiosis, and Differences between meiosis I and meiosis II.
View all #Life-Sciences-Grade12 Study Resources
We have compiled great resources for Life Sciences Grade 12 students in one place. Find all Question Papers, Notes, Previous Tests, Annual Teaching Plans, and CAPS Documents.
