Review Sheet for Anthrobio 161 test two

Review Sheet for Anthrobio 161 test two - Review Sheet for...

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Review Sheet for Anthrobio 161 – test two 1. Huntington’s disease is genetic trait caused by a deleterious mutation. Discuss why this gene continues to be maintained. This gene continues to be maintained due to isolation and a small breeding population 2. This gene from Limone is genetic trait that protects against the obstruction of the arteries by cholesterol. Discuss the factors that allowed for this trait to be established. Isolation and small population 3. List three distinctive traits that allowed mammals to replace reptiles as the dominant terrestrial vertebrate? Thermoregulation Advanced central nervous system Reproductive efficiency 4. List four characteristics or trends that differentiate primates from other mammals Grasping hands Forward facing eyes Nails instead of claws opposable thumbs 5. List one morphological feature that you can use to differentiate a monkey from an ape. Monkeys have tails, apes do not apes have y-5 molar pattern and monkeys don’t 6. List and describe two reasons that enabled prosimians like Tarsiers and Lemurs to survive up to the present. Isolation – because they were isolated due to continental drift, there was a lack of competition Reproductive Fitness – able to successfully reproduce
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7. List and briefly define below two mechanisms that can explain altruistic behavior Kin selection : more likely to protect your relatives as opposed to a stranger Reciprocal altruism : altruistic behavior carried out for non-relatives. This develops among groups that interact frequently, keep track of support given & received, and provide support only to those who help them. 8. What are the two hypotheses which account for the unique morphological and behavioral traits found in primates? Provide a brief discussion of each hypothesis. Arboreal adaptation : primates evolved to live in trees. They had depth perception to judge the distance between trees and color vision in order to judge nutritional quality of food. Visual Predation : primates were already adapted to living in trees – visual senses evolved to grab insects and other foods. Once primates lived in trees they expanded upon these traits. 9. Supposed you find several skulls of mammals. List one cranial feature that you can use to differentiate whether it belongs to a primate or to another mammal. Forward facing eyes 10. S uppose you find several fossil teeth. List one dental feature that you can use to determine whether it belongs to an ape or a monkey. Y-5 molar pattern – 5 cusps and larger area of the molar belongs to apes. 11. List and describe the two patterns of group membership that are found in primates Patrilineal societies: males stay within groups and females disperse – male hierarchies determined by coalition and competition Matrilineal societies: female stay within groups and males disperse – hierarchy is determined by inherited rankings
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12. Provide the information below with regards to the fossil which is considered to be
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Review Sheet for Anthrobio 161 test two - Review Sheet for...

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