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Gene Jury Single Gene Cross Cell DNA Living thing! Wee baldy sheep Nucleus Chromosomes size gene (wee) DNA Genes Every animal has two sets of genes, One from its mum and one from its dad Genes from dad Genes from mum size size gene gene What will the sheep look like? Size gene: big = dominant A B Lambing season You and your partner are going to be two sheep parents, making a lamb together. EachEach choose one size gene card – this amakes a gamete. parent has genes and needs card pack. All animals two of the eachgamete gene, one mum and Make have a lamb byversions combining withfrom yourtheir partner’s one from their dad. We will look at size genes today. Turn over the cards to see which gene characteristics (allelles) your lambfrom will carry Each remove the two size gene cards the pack and place them Record your lamb’s gene characteristics on your sheet coloured side up on the table. Leave the other cards in the pack. Your gamete LAMB Partner’s gamete Now take your own cards back. Repeat the lambing process to make a second lamb . What did your lambs look like? Lets work out the ratio of different lambs. In your pairs: one of you vote for lamb 1 the other vote for lamb 2. A B