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6. Define species.

  • Involves identifying individuals with desired charcteristics
  • A group of similar organisms that can breed together to produce fertile offspring
  • A measurement of individuals, selected from the population of organisms which are being investigated

7. Asexual reproduction can be increased by..

  • Meiosis
  • Mutation
  • Mutation, Meiosis & fusion of gametes

8. What are the causes of variation?

  • Genetic & Environmental
  • Selective breeding & The founder effect & Genetic bottlenecks
  • Soil conditions & pH

9. Minimising chance..

  • Using a large sample size & analysis of the data collected
  • Divide the study area, take random coordinates and take samples

10. What are the environmental influences?

  • Mutations, meiosis & fusion of gametes
  • Climate conditions, soil conditions, pH & food availability
  • Asexually reproducing organisms & sexually reproducing organisms

11. 'An influence on all organisms and the way their genes are expressed' is...

  • Environmental Factors
  • Genetic Factors

12. What is a mutation?

  • Sudden changes to the genes (alleles) and chromosomes
  • Nuclear division which forms gametes
  • Produces harmful toxins within the alleles causing the to distort

13. What is Intraspecific variation?

  • Members of the same species also differ from each other
  • If one species differs from another
  • A group of similar organisms that can breed together to produce fertile offspring