Unit 3 Biology

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Across
  1. 1. One example of environmental variation is the ____ you speak
  2. 5. Animals _____________ with each other for resources
  3. 6. Differences in characteristics is known as ___________
  4. 10. One example of genetic variation is ___ colour
  5. 11. ________ cells and egg cells only have 23 chromosomes
  6. 12. Organisms changing over a period of time is called
  7. 14. A section of DNA that codes for a characteristic
  8. 15. A species of animals of which all the animals have died is called __________
  9. 16. One piece of evidence for evolution is _________
Down
  1. 2. Animals have features called ____________ to help them survive
  2. 3. Variation that is caused by where you live is known as ________________
  3. 4. Human body cells have 46 ____________
  4. 5. Variation that can be measured over a range of values such as height is called ________________
  5. 7. One problem with the fossil record is that it is ___________
  6. 8. Variation that is caused by the DNA you inherit is called ___________
  7. 9. Variation that falls into distinct categories is called ____________
  8. 13. DNA is stored here in a cell