Genotype, Phenotype and Variation 0.0 / 5 ? BiologyDNA and inheritanceIGCSEAQA Created by: Nicole DCreated on: 07-12-13 17:58 Genotype, Phenotype and Variation 12 Questions 1 of 13 What is the genotype? The genes that have been inherited 2 of 13 What does the genotype determine? The kind of protein you make and therefore your characteristics 3 of 13 What is the phenotype? The overall appearance or your characteristics 4 of 13 Therefore, you can say _____(1)_____ can determine ______(2)_____ (1) Genotype ; (2) Phenotype 5 of 13 The next 4 questions are based on the 3 different gene types If we say that B = brown eyes (dominant) and b = blue eyes (recessive) ... 6 of 13 What is the (1) Genotype and (2) Phenotype of someone who is homozygous dominant? (1) BB ; (2) Brown eyes 7 of 13 What is the (1) Genotype and (2) Phenotype of someone who is heterozygous? (1) Bb ; (2) Brown eyes 8 of 13 What is the (1) Genotype and (2) Phenotype of someone who is homozygous recessive? (1) bb ; (2) Blue eyes 9 of 13 Why is this? (say about the dominant allele) The dominant allele is always the one that is portrayed if it is present, otherwise the traits of the recessive allele are portrayed 10 of 13 What else (other than the genotype) can affect the phenotype? The environmental causes or the conditions in which you have developed 11 of 13 State an equation linking these Genotype + Environmental Factors = Variation (in phenotype) 12 of 13 Why is genetic variation important? As it means we are more likely to survive large changes, as a species, or take advantage of different environments 13 of 13
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