Life on the Islands4/4: Evolution and Genetics Quiz What molecules make up a gene?*DNABNARNAMNAHint: Lots of these molecules join to form a double helix shape to form a geneWhich individuals will not exhibit genetic variation with one another?*Identical twinsNon-identical twinsParents and their offspringSibilingsHint: Two individuals which are genetically different will also look differentWhich of these is an example of continuous variation?*SexEye colourBlood groupWeightHint: Physical characteristics that are measured on a continuous scale can be any value between the minimum and maximum values for that characteristicWhat is the process for species becoming better suited to their environment?*InheritanceReproductionVariationAdaptationHint: This is a key process through which species change their physical characteristics.How long does evolution take?*Several generationsA whole lifetimeHalf a lifetimeThe infancy of an individualHint: How often does an individual pass on its genetic informationWhen did Charles Darwin visit the Galapagos Islands?*1835173516351935Hint: Charles Darwin was on board HMS Beagle when he visited the GalapagosWhat does Darwin's theory of 'evolution by natural selection' say?*Poorly adapted individuals will not survive to reproduce and pass on their genesThere needs to be genetic variation among individuals of the same speciesBest adapted individuals will survive the 'struggle of life'All of the AboveHint: Charles Darwin's book 'On the Origin of Species by Means of Natural Selection' is based on this theory
