'Most offspring' diaporamas de présentation

AIM

1.19k views • 87 slides

Predicting family dynamics in social vertebrates

Predicting family dynamics in social vertebrates. ??? (Ayo) ?????? ???????. Family dynamics in social vertebrates. 10.1 The changing scope of cooperative breeding research 10.2 Ecological constraints and the formation of family groups 10.3 Kinship and the tendency to cooperate

591 views • 46 slides

Psychology 2606

Psychology 2606. Dr. David Brodbeck. History and Origins of the Study of Brain and Behaviour. The course is about the relationship between brain and behaviour This is a question that has involved many people, philosophers, physicians, psychologists and neuroscientists

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Evolution for Beginners

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Natural Selection in Action

Natural Selection in Action. Section 6.3. Discussion. During the past several hundred years, a rapidly expanding human population has. media-2.web.britannica.com. caused some species to become extinct either from habitat destruction or overhunting.

392 views • 24 slides

Sex and Sex Ratio

Sex and Sex Ratio. What is sex? Why sex? Mechanisms of sex (gender) determination Sex (gender) ratio allocation. What is sex?. Genetic recombination What determines gender?. Why Sex? The Costs. Cost of males - could produce twice as many females

938 views • 23 slides

16.3

16.3. The Process of Speciation. Recall that biologists define a species as a group of organisms that breed with one another and produce fertile offspring. Members of the same species share a common gene pool . Different Species. Same Species. Isolating Mechanisms.

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Natural Selection

Natural Selection. Evolution. D escent with modification or Change in a population over time S mall-scale or microevolution: changes in gene frequency in a population from one generation to the next

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Survival Of the Fittest

Survival Of the Fittest. How fit are you???. A shark comes along and is looking for brightly colored prey among the dark ocean sand. Bright colors -1 Dull colors +1. You are hanging out with your fishy friends and you need to swim quickly away from an eel. Streamline body + 1

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One-way migration

One-way migration. Migration. There are two populations (x and y), each with a different frequency of A alleles (px and py). Assume migrants are from population x, and residents are population x; unidirectional).

308 views • 12 slides