Natural Selection Essay

Dec 25, 2023

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Natural Selection Essay

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NATURAL SELECTION

660 views • 32 slides

Natural Selection

Natural Selection. Evolution & Adaptation Bio 3.4.2 Explain how natural selection influences the changes in species over time. Essential Questions:. How does the process of natural selection bring about changes in species over time?. ?. ?. ?. ?. ?. ?. ?. Where are We headed?.

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Natural Selection

Natural Selection. Today’s Objectives: SOL BIO.8b-d. TSW investigate and understand how populations change through time, including: How variation of traits, reproductive strategies, and environmental pressures impact on the survival of populations

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Natural Selection

Natural Selection. © 2008 Regents of the University of California. All rights reserved. Use for SGI Field Test only. The Process of Natural Selection . In any population of individuals, there is genetic variation . Genetic variation is the result of mutation and recombination.

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NATURAL SELECTION

NATURAL SELECTION. The scientifically identified method explaining how evolution happens. My Students Are Comedians. Types of Selection Processes. What is a population? What would be some pressures that could develop upon a population? With such pressures what could happen to a population?

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Natural selection

Natural selection . Natural Selection. How does it work?. What is going to happen here? . Natural selection . Definition: differential reproductive success

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Natural Selection

Natural Selection. Anim A l. ADAPTATIONS. What is natural selection?

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NATURAL SELECTION

NATURAL SELECTION. There are 2 variations of the beetles, green and red. The birds prefer eating the green beetles. Over generations the red beetles increase in population because they are not eaten by the birds. More survive to produce more offspring. Generations later….

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Natural Selection

Natural Selection. Darwin ’ s 4 Main Postulates. 1. Individuals, even siblings, in a population vary (there is variation) 2. These variations can be passed to offspring (are inherited). Darwin ’ s 4 Main Postulates.

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NATURAL SELECTION

EVOLUTION . NATURAL SELECTION. How Does Evolution Work?. On his journey with the HMS Beagle, Darwin studied many different living organisms. His research revealed that species changed over time .

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Natural Selection

Natural Selection. A Mechanism for Evolutionary Change. Evolution. Change in the genes of a population over time. Evidence: includes fossil record, DNA and protein studies and direct observation. indicates that living things on the earth change over time.

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Natural selection

Natural selection. Natural selection. Concept of natural selection is simple, but mechanism is subtile Deals with survival and reproduction Comprises the only known process that offers an explanation for the origin of adaptations.

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Natural selection

Natural selection. Outline of the day. Turn in your lab reports at the front Both the tidepool trip report and the horticulture tour worksheet More than 10 minutes late = bad Any questions on last week’s lab? Quiz Introduction to the lab Lab! Check out Get a stamp

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Natural Selection

Natural Selection. Evolution: Teachable Tidbit. Context : Introductory biology for science majors 2 full class periods and a follow-up exam question Learning Goal : We want students to understand that natural selection is a phenomenon that applies to their lives Learning Outcomes :

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Natural Selection

Natural Selection. Darwin vs Lamarck. Lamarck - animals passed on acquired traits Darwin - individuals are selected for survival by combinations of traits. Darwin observed…. More individuals are born than live to reproduce individuals vary from one another

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Natural Selection

Natural Selection. How have organism’s adapted to their environments over time?. The Four Tenants of Natural Selection…. OVERPRODUCTION: Organism’s produce more offspring than their environment can support. Why?

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Natural Selection

Natural Selection. Questions from biogeography. Biogeography is the study of patterns in the geographic distribution of individual species and entire communities. Questions from biogeography. Rhea. Some patterns were intriguing to early scientists.

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Natural Selection

Natural Selection. Evolution by Natural Selection. Benchmark:. Standard 15: Diversity and Evolution of Living Organisms

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Natural Selection

Natural Selection. “Survival of the fittest”. Haha?. More examples of Evolution.  x 1  x 2. UNIT 3. Chapter 7: Introducing Evolution. Birds are a diverse group of animals. Traits from beak to colour to nutrition are adapted to the environment in which they live and reproduce.

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Natural Selection

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Natural Selection

Natural Selection. What was Darwin’s reasoning?. Plants and animals that arrived on the Galapagos faced environmental factors that were different from the mainland. Species gradually changed over many generations and became better adapted to the new environment. What is evolution?.

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Natural Selection

Natural Selection. Charles Darwin. On the Origin of Species Sailed with the HMS Beagle Observations made in the Galapagos Islands These observations helped him form the theory of how species change over time called natural selection. What is Natural Selection?.

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