b)+Inheritance+-+(cell+division+and+variation)

Section 3- Reproduction and inheritance a) Reproduction (plants) - a) Reproduction - (humans) - b) Inheritance (chromosomes, genes and DNA) - b) Inheritance - (mono-hybrid crosses and sex determination) - b) Inheritance - (cell division and variation) - b) Inheritance - (evolution)

b) Inheritance - (cell division and variation)
What processes do we need cell division for? Discuss
 * Starter**

Video review of DNA and introduction to cell division media type="custom" key="28220949" n.b. after you have finished the topic and watch the video again, there is a mistake in the explanation of Meosis - can you spot it?

3.23 understand that division of a diploid cell by mitosis produces two cells which contain identical sets of chromosomes 3.24 understand that mitosis occurs during growth, repair, cloning and asexual reproduction 3.25 understand that division of a cell by meiosis produces four cells, each with half the number of chromosomes, and that this results in the formation of genetically different haploid gametes 3.26 understand that random fertilisation produces genetic variation of offspring 3.27 know that in human cells the diploid number of chromosomes is 46 and the haploid number is 23 3.28 understand that variation within a species can be genetic, environmental, or a combination of both
 * Learning outcomes (s//tudents will be assessed on their ability to)//**

Prep your notes at home. Improve them in class with tutorials then attempt the summary questions. Remember to
 * Approach**
 * update your notes when marking/reflecting on the summary questions**.

Summary questions media type="custom" key="27835937"

//** Green book references: p190-196 **//
 * Resources**

These video tutorials from [|Click4Biology]address each learning outcome. It's recommended that you use them both as part of your learning and your revision. Download links are provided for those who have trouble accessing Youtube. //N.B. The numbering of some of the videos is out due to Edexel syllabus changes.//

3.23 mitosis pt 1 [|download] media type="custom" key="27835941" pt 2 [|download] media type="custom" key="27835945" pt 3 [|download] media type="custom" key="27835949" 3.24 mitosis and it's uses [|download] media type="custom" key="27835951" 3.25 meosis [|download] media type="custom" key="27835953" 3.28 variation within a species [|download] media type="custom" key="27835955"

These notes are not perfect, but they do show different ways to create useful revision notes for this topic. Use the notes to help you **create your own version**. media type="custom" key="28272197"
 * Example student notes**