Neurobiology/ Behavior. By: Anam Saeed Sandya Kumar Kendra Wang. E.1.1. Define these terms in the context of animal behavior. Stimulus Response Reflex. Stimulus. Stimulus (pl. stimuli) - Change in the environment (internal or external) detected by a receptor.
Natural selection requires:
If the organism is evolving then we might expect to observe a change in the frequency of heritable characteristics
Phenotypic variations is in the direction of migration (behavior)
Success of an organism can be measured by:
Through natural selection, the features improving a male\'s chances of successfully competing with other males for the best mate (mate selection) will become more dominant.
Exaggerated traits, called “ornaments”,
- The evolution of these traits in a particular gender has led to the marked sexual dimorphism of certain species.
Feathers of the peacock
basis of a ‘good’ display, he will be chosen
by the rather dull female peacock for
an ‘exaggerated trait’, where such traits are
believed to have evolved by sexual selection.
Animals show behaviours that follow rhythmical variation, for instance,
Imagine touching the hot surface of a stove or the metal part of the seatbelt in a car during the middle of June. Now explain each step of how you reflexively took your hand away. Include words such as stimulus, response, and reflex.
Activity # 2:
Activity # 3 (if there is time):
and BINGO was his name O!