b)+Inheritance+(chromosomes,+genes+and+DNA)

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 (chromosomes, genes and DNA)
__Science club - The Story Of Inheritance__ media type="custom" key="27835845"
 * Starter**

__Discuss characteristics__, which are visible, which are not, which are inherited and which are affected by the environment.

__What is DNA?__ Find out by watching the BBC Knowledge Explainer on DNA media type="custom" key="27606358"

__18 Things you should know about genetics__ Before watching you will be assigned a number(s) - remember and take notes on the information about your number. Later as a class you will be expected to recall your information when your number is called. media type="custom" key="28088857"

3.13 understand that the nucleus of a cell contains chromosomes on which genes are located. 3.14 understand that a gene is a section of a molecule of DNA and that a gene codes for a specific protein. 3.15 describe a DNA molecule as two strands coiled to form a double helix, the strands being linked by a series of paired bases: adenine (A) with thymine (T), and cytosine (C) with guanine (G). 3.16 understand that genes exist in alternative forms called alleles which give rise to differences in inherited characteristics. 3.29 understand that mutation is a rare, random change in genetic material that can be inherited. 3.33 understand that the incidence of mutations can be increased by exposure to ionising radiation (for example gamma rays, X-rays and ultraviolet rays) and some chemical mutagens (for example chemicals in tobacco).
 * Learning outcomes (s//tudents will be assessed on their ability to)//**

1. In groups take a look through the summary questions (below). how many can you confidently answer? Contribute answers to the class discussion.
 * Approach**

2. Now you have a good idea of what you know well and not so well complete your own notes (tutorials and class reviews will help you build and improve your notes). media type="custom" key="27835853"

3. These are the summary questions you will use to initially find out how much you know and later use to check your understanding. media type="custom" key="27835859"

//** Green book reference: p180-189 **//
 * Resources**

Tutorials from learn.genetics:
 * What is DNA?
 * What is a gene?
 * What makes a firefly's tail glow? This tutorial explains protein synthesis
 * Build a DNA molecule

S-cool notes on:
 * Variation (though not required this is very useful background information and gives a context to what you are learning)
 * Genetic code

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.//

3.13 Genes are located on chromosomes download media type="custom" key="27835877" 3.14 a gene is a section of a molecule of DNA download media type="custom" key="27835875" 3.15 DNA molecules and genetic information download media type="custom" key="27835873" 3.16 genes exist in alternative forms called alleles download media type="custom" key="27835871" 3.29 mutations download media type="custom" key="27835867"

The central dogma of moelcular biology described and haploid vs. diploid explained by Bozeman Science media type="custom" key="27835865"
 * Extras**

Extend yourself - watch and learn about how DNA is packaged into chromosomes ready for cell division in this video from the DNA Learning Center media type="custom" key="27835861"