Variations and adaptations

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  • variations and adaptations
    • types of variation
      • variation is the differences that exist between individuals.
      • variation within a species is called intra specific variatrion
      • variation between different species is called interspecific variation
      • continuous variation is when the individuals in a population vary within a range. no distinc catagories
        • continuous variation can be shown by continuous data which is quantitative. numbers.
      • discontinuous variation is when there are two or more distinc catagories. each individual falls unto one of these catagories. no intermediates Eg white fur or black fur.
        • this can be shown by qualitative data, which is words, not numbers
        • this is affected by only inherited genes, environnment has no effect
    • causes of variation
      • individuals within a species can have different alleles.
        • this variation in genotype causes a variation in the phenotype, showing variation
      • differences in the environment can cause variation such as climate or food
      • characteristics can be determined by both environment and inherited genes
    • adaptations
      • alleles that code fro variation get passed on from parent to offspring
      • behavioural adaptations are the way an organism acts to increase chance of survival
      • anatomical adaptations are structural features of the body that ibcrease the chance of survival
      • physiological adaptations are the processes inside of the body that increase the chance of survival
      • being better adapted to an environment means the organisms has features which are going to increase the chance of survival and reproduction


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