Variations -Variations are slight differences between each organism of the same kind which makes them somewhat unique -Variations are caused by genetics.

Slides:

Advertisements

Similar presentations

7d. Know variation within a species increases the likelihood that at least some members of a species will survive under changed environmental conditions.

Advertisements

The Five Factors of Evolution

Natural Selection, Adaptation, and Evolution

Population genetics genetic structure of a population.

Team Awesome Humble Nohemi, Tommy, Madison, Eric, Anna, and Marissa.

Adaptations  Individual organisms that appear more similar to one another than to the individuals of another, different species  Organisms that are.

Evolution and Natural Selection

NATURAL SELECTION. EVOLUTION the mechanism of evolution  organisms that are better suited to survive in a given environment are more likely to survive.

A Closer Look At Darwin’s Idea of Natural Selection

Unit 5 Lesson 1 Theory of Evolution by Natural Selection

AND ADAPTATIONS NATURAL SELECTION 1. CHARLES DARWIN His theory of evolution by natural selection explained: Where all of the astonishingly diverse kinds.

A Closer Look At Darwin’s Idea of Natural Selection Jarod Raithel Mary Carroll High School Honors Biology I Spring 2007.

The Theory of Natural Selection Adaptation – a beneficial trait that allows an individual to survive better than others Adaptations may help individuals.

Measuring Populations Growth Rate- the amount by which a population’s size changes over time. –Birth, death, immigration, and emigration Immigration- how.

Choose an Animal As a class, decide on an animal that is relatively well- known.

Natural selection Learning objectives: -Level 3- Recall that some organisms compete with each other for resources. Level 4- Describe the theory of natural.

Variations There can be many different variations For a trait. Variations of a trait can increase or decrease an organisms chance of survival in an environment.

Aim: How does adaptative variation lead to the survival of an organism?

Notes Science  Variation refers to a variety or diversity of traits (different kinds) within any given population. Example: Look around at the other students.

Adaptation and Variation. Organisms face environmental challenges that limit their ability to survive. These include severe weather, lack of food and.

Darwin “Natural Selection”. Natural Selection: The process by which individuals that are better adapted to their environment are more likely to survive.

Importance of Diversity Most species have a variety of traits that might be passed on from generation to generation This variety of traits is called diversity.

Genetic Variation. KEY CONCEPT A population shares a common gene pool.

$200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 Vocabulary Charles Darwin.

Natural Selection Topic 4.2. Introduction Review: Define adaptation: Adaptation: special feature of an organism which allows it to survive in its environment.

Darwin’s Evolution A Theory of Evolution. How did the giraffe get its long neck ? Lamarck had an idea… Lamarck had an idea… Organisms acquire traits.

A mechanism that is easily observable in nature and experiments

Natural Selection The process by which organisms that are better suited to their environment than others produce more offspring.

Theory of Evolution by Natural Selection

Variation in Populations Tennessee SPI Objective:

Natural Selection Enviro 2 Go

Natural Selection The process by which organisms that are better suited to their environment than others produce more offspring.

Title your page: Selective Breeding and Natural Selection Notes

Peppered Moths Year #1 Light Moths 556 Dark Moths 63 Year #10

Genetic Variation Notes

Genetics Exam School: Name: Class: Date: Part 1: Fill in the blank

Aim: How does adaptative variation lead to the survival of an organism? Evolution 2.

Evolution The Spice of Life.

Darwin & Natural Selection

Organisms and change over time..

Natural Selection.

Adaptation and Variation

DSW Why are species on the Galapagos so diverse?.

The Rest Of The Standards

Darwin’s Voyage What did Darwin observe?

What is a species? What makes two organisms different species?

Population Variation.

Species that reproduce sexually have an advantage over those that reproduce asexually when external conditions change. This is how organisms have become.

In your own words, explain the significance of the diagram shown.

Natural Selection & Evolution

This is Evolution.

Evolution Standards Rachel Tumlin.

3 Ways Evolution Happens

Notes Science SPI Adaptations

Darwin's Theory of Evolution

Daily Review of class notes. Castle Learning due Friday

A species of insect has either long or short wings

Variations in Populations

Diversity of life forms

Chapter 10-3 Notes: Natural Selection in Action

Vocab #21 Mr. Addeo.

Evolution Notes.

Population Conservation

Genetic Variation MT: Allele Frequency.

Variation in Populations Tennessee SPI Objective:

Traits and How They Change Environmental Impact Over Time

ADVANTAGES & DISADVANTAGES OF SEXUAL & ASEXUAL REPRODUCTION

Mechanisms of Evolution

Aim: How does adaptive variation lead to the survival of an organism?

Starter An animal has a diploid chromosome number of 14. Calculate the number of possible genotypes of gametes it produces due to independent segregation.

Presentation transcript:

Variations -Variations are slight differences between each organism of the same kind which makes them somewhat unique -Variations are caused by genetics and/or mutations (ie. LLOYD  FLOYD)

Variations -Environmental factors change over time, and when they do, those changes can affect certain individuals or organisms more than others -Variation within a species gives more chances for that species to adapt to change

Variations -More chances for adaptation increases the probability that at least some of the species will be able to adapt to the new conditions -Thus, some variations are more advantageous than others depending on the conditions

Variations -Genetic diversity helps the survival of a species should the environment change significantly -Sameness can mean vulnerability that could lead to extinction

Variations in Moths Directions: Given the two kinds of moths pictured to the right, when might the brown variation be useful when the white one isn’t? When might the white variation be useful when the brown one isn’t? What do you think might happen to the numbers of their population over time given those different contexts? HINT: Consider things like predators, weather, environment, and so on.