1) Which characteristic is determined only by genes? a) Weight b) Height c) Skin colour d) Blood group 2) What do we call different versions of the same gene? a) Alleles b) Chromosomes c) Homologous pairs d) Heterozygous 3) How many chromosomes are there in human gametes (sperm and egg cells)? a) 13 b) 23 c) 46 d) 26 4) Which is only true for sexual reproduction? a) It produces clones b) There is no genetic variation c) There is no fusion of gametes d) It requires two parents 5) Which is a disadvantage of cloning plants by tissue culture? a) It is quick b) All susceptible to same disease c) Takes up little space d) Can be grown all year 6) What is the name of the first cloned mammal? a) Polly b) Dolly c) Holly d) Golly 7) Genetic engineering has produced bacteria which make which human hormone? a) Insulin b) Adrenalin c) Testosterone d) Oestrogen 8) Pick the odd one out. Darwin's idea was only gradually accepted because.. a) it went against common religious beliefs b) the mechanism of inheritance was not known c) there was insufficient evidence d) no-one liked him 9) Which of these only applies to Lamarck's theory of evolution? a) Individuals show variation b) Survival of the fittest c) Inheritance of acquired characteristics d) Successful genes are passed on 10) How do we represent evolutionary relationships between species? a) Kite diagrams b) Evolutionary trees c) Branching keys d) Evolutionary bushes

B1.7/8 Variation and evolution

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