Because of the effects of environmental chemicals on animal development, some species are used as 'bioindicators' to determine the presence or level of pollutants in a particular area.These species are chosen because they are particularly sensitive to a specific compound and/or because the phenotype they exhibit is easily recognizable.If you wanted to know whether water-ways contained high levels of agricultural run-off pesticides like RoundUp, what bioindicator species would you choose and what phenotype would you look for?

MCQs on the field of developmental biology from its origins to the present day, from seminal historical experiments to modern techniques and the mechanisms of development. Covers a variety of organisms from their start at fertilization through the stages of their development and on to entire organismal and post-embryonic development, as well as the molecular and genetic regulations involved in these processes.