Life on the Islands4/4: Evolution and Genetics Quiz What molecules make up a gene?* RNA DNA BNA MNA Hint: Lots of these molecules join to form a double helix shape to form a geneWhich individuals will not exhibit genetic variation with one another?* Non-identical twins Identical twins Parents and their offspring Sibilings Hint: Two individuals which are genetically different will also look differentWhich of these is an example of continuous variation?* Sex Eye colour Blood group Weight Hint: 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?* Adaptation Inheritance Variation Reproduction Hint: This is a key process through which species change their physical characteristics.How long does evolution take?* A whole lifetime Half a lifetime The infancy of an individual Several generations Hint: How often does an individual pass on its genetic informationWhen did Charles Darwin visit the Galapagos Islands?* 1635 1835 1735 1935 Hint: 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 genes There needs to be genetic variation among individuals of the same species Best adapted individuals will survive the 'struggle of life' All of the Above Hint: Charles Darwin's book 'On the Origin of Species by Means of Natural Selection' is based on this theory
