Variations and adaptations
- Created by: vezting
- Created on: 10-04-16 12:50
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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
- individuals within a species can have different alleles.
- 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
- types of variation
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