Structure and Function of Organisms
Lab 10: Nest recognition in Harvester ants
1. The scientific name for the ants used in this lab is _________________________.
2. What is the category of chemicals called that functions as sex attractants as well as a means of identifying members of a colony or caste of insects? _______________________
3. Which female in an ant colony is the only fertile reproductive ant? ____________
4. Female ants differ from male ants because the female ants are ________________ while the male ants are _________________.
5. How often does the fertile female ant of a colony mate? ____________________
6. Each female ant receives ____________ copy/copies of the female parent genome.
7. Female siblings, on average, share _____________% of the genetic information they received from their female parent.
8. Female siblings share _____________% of the genetic information they received from their male parent.
9. On average, female sibling ants share ____________% of their entire genomes in common.
10. Worker ants can propagate their genes indirectly by ____________ the queen ant.
11. In this lab you will be investigating whether or not the ants show a preference for their own soil or __________________________ and whether or not they show a preference for their own soil or _______________________.
12. You should be careful when handling the ants because they can inflict a painful _____________ on the unwary.
13. What kind of hypothesis will you be testing in the lab? ___________________________
14. State specifically the hypothesis that you will be testing:
15. How long will you observe each individual ant? ___________________________
16. How many ants (n) will make up the initial small samples? __________________
17. How many ants (n) will make up the pooled sample? _______________________
18. What kind of statistical test will be performed on the data? __________________________________
19. What happens to the null hypothesis if data are significant? __________________
20. What happens to the null hypothesis if the data are not significant? _______________________________
21. If the calculated T value was smaller than the appropriate T value in the Wilcoxan Signed Rank test table, what would do with your hypothesis? ______________________________
22. If the ants have no soil preference in this investigation, how often would you expect to observe them on the non-nest soil samples? ___________________________
23. How might the ants recognize their own soil from a sample taken from else where? __________________________________________________________
24. At what level of significance are we testing these data? _____________________
25. If the data are statistically significant, what is the probability that these data reflect a sampling error and are actually not significant? _____________________
26. How often do we prove our hypothesis to be correct? _______________________