PSYCH 2TT3 Lecture Notes - Lecture 5: Naked Mole-Rat, Laser Ablation, Dna Profiling

• School: McMaster University
• Department: Psychology
• Course: PSYCH 2TT3
• Professor: Reuven Dukas

Document Summary

Spend almost all their time underground. The only known mammals that show eusociality. Why: reproductive division of labor, communal care of young, & overlapping generations. If one"s survival is at risk, it should fight w/ its sibling. The investment per offspring should depend on the lifetime cost. & benefit to the parent. Insect agriculture involves growing fungi on gardening substrate (i. e. plant material) & protecting their crop from undesired species (weeds & pests). Use of pesticide is common. The evolution of agriculture in insects: 9 independent origins of insect agriculture, no reversal to non- agriculture life. 1 m = 10^- 3mm = 10^- 6m. 1nm = 10^- 3 m = 10^- 9m: bacteria & cells: 1- 30 m, viruses: 20- 100nm. The ability of organisms & cells to move up or down chemical gradients. Yes (i. e. hearing from both ears). Simultaneous comparison is impossible b/c the change chemical gradient across the body is too small.