| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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Some disorders are inherited. These disorders are caused by the
inheritance of certain alleles. |
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How are inherited diseases passed on? |
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Polydactyly (having extra fingers or toes) is caused by a dominant allele. |
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What causes polydactyly? |
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Cystic fibrosis (a respitory disease) is caused by a recessive allele, so both parents must carry the gene in order for the offspring to have the disease. |
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What causes cystic fibrosis? Compare (possibly in a table) the mutation, it's effects, whether it is dominant or recessive and the combinations from the parents by which it would be inherited.
Use pedigree charts to work out family history of inherited conditions. Maybe Haemophilia and the Royal family as an example. |
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Students should make informed judgements about the economic, social and ethical issues concerning embryo screening, given appropriate information. Appreciate that embryo screening and gene therapy may alleviate suffering but consider the ethical issues which arise.
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What are the economical, social and ethical issues concerning embryo screening? EW: Evaluate whether embryo screening is the 'right thing' to do. |
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Ordinary human body cells contain 23 pairs of chromosomes. |
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How many chromosomes are found in an ordinary human body cell? |
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22 pairs control characteristics only, but one of the pairs carries the genes that determine sex.
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What does the 23rd choromsome determine? |
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? In females the sex chromosomes are the same (XX).
? In males the chromosomes are different (XY). |
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What is combination of sex chorosomes for a male and female? |
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Students should be able to carry out a genetic cross to show sex inheritance. |
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Draw a genetic cross to show sex inheritance |
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Students should understand and use direct proportion and simple ratios in genetic crosses. |
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What is the probability of having a male or female offpsring? Complete Punnett squares to demonstrate there is a 50:50 chance of having a girl or a boy. |
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