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Transcript
VARIATION (D________ between us) LABEL THESE! I_____________ factors are caused by your GENES. E.g.__________________ E___________ factors are caused by your surroundings and how you live your life. E.g.__________________ D = dimples You & Your Genes 1 D d d = no dimples Which is dominant? _____________ How do you know? ______________ Does this person have dimples? ____ The genotype is _________ WHERE DID YOU GET YOUR GENES?? What is the genotype of someone with no dimples? ___________ The ‘no-dimple’ gene is r__________ From your ____ Fertilised egg + From your ____ The fertilised egg will become an e_______, then a f_______, and eventually, a b______. YOU! Put the number of chromosomes in the boxes. SEX CHROMOSOMES • Put a XX = _______ XY = _______ X X Y X round the Dad • Put a round a letter that represents an egg • Fill in the chart • There is a ____% chance the baby will be a girl. • Which parent determines the baby’s sex? Gene therapy can be used to cure some ________. It is still in the early stages of development. GENETIC DISEASES are caused by f_______ genes. HEALTHY GENE Examples: 1. __________ ___________ f Symptoms: thick, sticky _______ F F F Put into ______ of patient Affects: _______ & __________ systems 2. ________________ Disorder Symptoms: loss of co-ordination and memory F F F F F F f F What is PGD? Some of the ‘left-over’ embryos are used to make STEM CELLS. What are stem cells? Why are they useful? F Patient’s cells reproduce – with healthy gene! F You & Your Genes 2 Affects: __________ system Inheritance of CF A carrier of CF is a person F with one normal and one f faulty allele of the CF gene. The faulty one is r_________. What is the chance of two carriers having a child with CF? Make lots of ________
