What is a high degree of sexual dimorphism associated with in primate social groups?
Terrestrial primates tend to show a greater degree of dimorphism than arboreal primates. It has been hypothesized that larger sizes of body mass and canine tooth are favored among males of terrestrial primates due to the likelihood of higher vulnerability to predators.
What causes sexual dimorphism?
Sexual dimorphism, the differences in appearance between males and females of the same species, such as in colour, shape, size, and structure, that are caused by the inheritance of one or the other sexual pattern in the genetic material. …
Which human ancestor showed the first evidence of sexual dimorphism?
erectus
What is sexual dimorphism quizlet?
What is sexual dimorphism? the difference between males and females of the same species in size of bones and musculature. Superior view, males have more heart shape opening.
Do humans have sexual dimorphism?
Although humans exhibit low levels of sexual dimorphism compared to other animals, differences between females and males are numerous. Evolutionary, sexually dimorphic traits develop through the process of sexual selection.
What is altruistic behavior quizlet?
altruistic behavior. self-sacrificing behaviors beneficial to another organism. example: when a worker bee stings someone to protect the hive. appendage. the jointed extentions of body segments such as legs and antennae.
What is true altruistic behavior?
Altruism refers to behavior that benefits another individual at a cost to oneself. For example, giving your lunch away is altruistic because it helps someone who is hungry, but at a cost of being hungry yourself.
Which of the following is an example of mere exposure?
You have probably had the experience of hearing a new song and not caring for it much at first, but after hearing it a number of times, you find that you really do enjoy the song and catch yourself humming it when you least expect to. This phenomenon is one example of the mere exposure effect.
What are motivational concepts?
Concept of Motivation: Behind every human action there is a motive. Motivation may be defined as a planned managerial process, which stimulates people to work to the best of their capabilities, by providing them with motives, which are based on their unfulfilled needs.
What are the effects of extrinsic motivation?
Extrinsic motivators will increase immediate performance, but will have a detrimental effect on subsequent performance when a reward is not offered. Additionally, when the promise of a reward is broken, there will be an even greater decrease in performance.