K.C.S.E Biology Q & A - MODEL 2012PP1QN26
(a) State the theories of evolution proposed by the following scientists.
(i) cell organelles
(a) Theory of natural selection;
Theory of environmental influence on inherited characteristics;
(b) (i) Similar organelles performing similar functions in different organisms suggest a common ancestry/cell biology;
(ii) Fossil records/palaeontology/by comparing fossils to show phyllogenetic relationship between organisms/common ancestry;