Vartation
- Created by: Jenna k
- Created on: 08-03-14 07:44
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- Variations
- Key words
- Intraspecification
- When members of the same species differ form one another.
- Interspecification
- When one species differs form another
- Intraspecification
- Variation occurs between members of the same species and between species.
- Sampling
- Sampling bias
- There may be conditions that are not included in samples as they are harder to get to or less pleaseant.
- Chance
- Our sampling methods may lead to unrepresentative data as our choices of specimens are down to chance.
- Random Spamling
- This method would eliminate biases and make the sample more representative.
- Method of random sampling.
- 1) Section off the area in to metre squared areas
- 2) Use ramdomly generated numbers to pick which quadrants you are going to sample form.
- 3) Take samples at each of these quadrants and you will have representative data
- 2) Use ramdomly generated numbers to pick which quadrants you are going to sample form.
- 3) Take samples at each of these quadrants and you will have representative data
- 1) Section off the area in to metre squared areas
- Method of random sampling.
- This method would eliminate biases and make the sample more representative.
- Sampling bias
- Normal Distrabution
- Standard deviaiton
- Standard deviation shows the spread of data and the deviation from the mean.
- You will not have to work t out just know what it is and how the advantages of it.
- Mean
- As you know the mean is all the numbers added up and divided by the amount of numbers.
- This method does not tell you about the range of values but it does illustrate the spread of data.
- Standard deviaiton
- Causes of variation
- Genetic factors
- Mutations
- Sudden changes to the genes or chormosomes that may be passed on to offspring.
- Miesos
- When Gametes are formed (Sex Cells) the DNA is all mixed up.
- Fusion of Gametes
- When fertilisations occurs the fusion of two different ganetes casue huge changes.
- Mutations
- Environmentat infulences
- Climate, pH conditions, temperature, light, food sources affect the growth of a plant.
- They don't dictated the ability of the genes but they do control how effective the genes can be in an environment.
- Both
- Genetic factors
- Key words
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