Environmental Variation D. Crowley, 2007

Environmental Variation Saturday, July 06, 2019 Environmental Variation To understand how environmental variation occurs

Environment Look at the pictures of Posh below - what differences can you see? What could cause these differences?

Environment The main differences seen (except hair colour) is that her hair length and her weight vary greatly in the pictures. These features are affected by environmental factors **be careful with hair colour - this is inherited, however we can temporarily change its appearance using dyes

Environmental Variation Characteristics of animals and plants can be affected by factors such as climate, diet, accidents, culture and lifestyle If you eat too much you will become heavier, and if you eat too little you will become lighter A plant in the shade of a big tree will not be able to photosynthesise as quickly as one in the sunshine, so it will be smaller Variation in a feature as a result of the surroundings, is called environmental variation

Genes & Environment Complete the worksheet, filling in the missing words (then stick this in your book) Genetic information Genes Characteristics Environment Tattoo Scars Temperature Water Height Tall Nutrients

Variation & Variety Variation can occur within a species (i.e. some people have blue eyes, others have brown eyes) A great amount of variation also occurs between species (i.e. guerillas are generally hairier than humans)! Your task is to look at two different species of potatoe, and identify some characteristics (e.g. size; colour; mass). You then need to identify how these characteristics vary between the two species, i.e. how does colour vary between the two species? how does size vary between the two species? Once you have decided on the characteristics you are to measure, design a results table in your book…

Variation Results Species Characteristic 1 (e.g. colour) Characteristic 2 (e.g. size) Characteristic 3 (e.g. mass) Potatoe species 1 species 2 Remember, look at a few examples from each species so you can record an accurate representation of that characteristic The write a conclusion in your book, identifying how one species is different from the other. Why do you think this variation exists (have you collected enough data)?