Lesson 9
Meiosis and Variation
Learning Intention/Whāinga: Explore how meiosis creates increases variation.
Paearu Angitu/Success Critera
7. I can describe and explain the process of meiosis and how it results in greater variation than asexual reproduction.
8. I can explain how independent assortment, crossing over, and random fertilization causes the increase variation in sexual reproduction.
9. I can explain how crossing over results in the recombination of chromosomes in the gametes.
The recording for this lesson.
PowerPoint Used in Class
In case you're still struggling to understand meiosis and how it increase variation, here is a video animation explaining it.
No written notes for this lesson.
Scan of written board notes.
Mahi Choice
Start at the level you feel comfortable with and then keep levelling up!
If you’re looking for “homework” or evidence in case we need a UEG, these are perfect tasks to do.
Remember, you’re not expected to do all these tasks. These are just recommendations to give you ideas on how to support your learning.
Level 1
SciPad
Meiosis as a Cause of Variation - Independent Assortment (page 109)
Meiosis as a Cause of Variation - Crossing Over (pages 110-111)
Meiosis as a Cause of Variation - Segregation (page 112)
Fertilisation (page 113)
Level 2
SciPad
Sources of Variation Chapter Crossword (page 116)
Sources of Variation Chapter Review Questions (pages 117-120)
ESA
Activity 8: Genetic Variation
Level 3
NBTS Genetic Variation Collated Questions with Answers
Be Creative and make video, poster or art work that explains independent assortment and/or crossing over.
GCSE Biology
Make notes and answer questions.
Starting with at the beginning of Chapter 21: Cell Division, Chromosomes, and Genes and finish by answering the questions on page 202.