Across
- 3. Cultivation of a single species/variety of crop
- 8. Difference between individuals caused by genetic factors
- 10. Variation within/between species through comparison of measurable characteristics and DNA
- 12. Gene technologies enabling direct investigation of DNA sequences to clarify relationships
- 13. Measures the spread of values about the mean, indicating the extent of variation in a data set.
- 14. Results should be analyzed statistically to ascertain that observed variation isn't random.
- 15. Chemicals used to kill unwanted plants, reducing plant diversity
Down
- 1. Cause variation between species and within a species
- 2. Removal of trees and hedgerows resulting in reduced species diversity of insects
- 4. DNA sequence More useful than comparing amino acid sequence due to information on introns and degeneracy
- 5. Divide the area into a grid on a map and select coordinates using a random number generator.
- 6. A population sample is chosen at random to avoid bias.
- 7. Chemicals used to kill pests directly, impacting organisms dependent on pests for food
- 9. Scientists choose a sample of a population rather than the whole population due to time constraints or impossibility of capturing all individuals.
- 11. Climate, food availability, and lifestyle can cause variation within a species.