Genetic Variation MT: Allele Frequency.

Slides:

Advertisements

Similar presentations

KEY CONCEPT A population shares a common gene pool.

Advertisements

The Five Factors of Evolution

1) What would happen to the population size if the average female produced more than one surviving reproducing daughter? A) there would be more females.

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

Genes and Variation Presented by: Mr. Godinez What is it?

Genes and Variation 16-1.

The plant of the day Welwitschia is a monotypic gymnosperm genus

Chapter & 11.3.

16-1 Genes and Variation. How Common Is Genetic Variation? Many genes have at least two forms, or alleles. All organisms have genetic variation that is.

Chapter 16 Evolution of Populations. Variation and Gene Pools Genetic variations (differences) are studied in populations (group of individuals of the.

Evolution Chapter 16 regents. Copyright Pearson Prentice Hall How Common Is Genetic Variation? Many genes have at least two forms, or alleles. All organisms.

Catalyst #5 Pg. 19 Semester 2 Table of Contents 4. Lesson 59- Natural Selection Lab Pg Lesson 60- Mutations and Evolution Pg Lesson.

Genes and Variation 16-1 This section describes the main sources of heritable variation in a population. It also explains how phenotypes are expressed.

Evololution Part 1 Genes and Variation Part 1: Genes and Variation.

Objective: What is genetic variation and how does it affect a population?

If we are all the same species (Homo sapien), why don’t we all look the same?

EVOLUTION …via Natural Selection. Organisms produce more offspring than can survive.

End Show Slide 1 of 24 Copyright Pearson Prentice Hall 16-1 Genes and Variation Genes and Variation.

Individuals in a population may evolve. A.True B.False False! Individuals do NOT evolve; POPULATIONS do!

I. Natural Selection Who Lives Who Dies.

A mechanism that is easily observable in nature and experiments

Chapter 16 Section 1 Genes and Variation

KEY CONCEPT A population shares a common gene pool.

Variation and Natural Selection

Evolution Practice Test

Mechanisms of Evolution

The Genetics of Evolution

Evolution… It’s a gene thing

Evolution of Populations

V. How Does Evolution Work?

Genetic Variation within Populations 11.1

Adaptation and Variation

5/2 Warm-up Pick up handouts Log-on HW: Allele Frequency WS Agenda

EVOLUTION VOCAB Chapter 16 & 17

The Rest Of The Standards

KEY CONCEPT A population shares a common gene pool.

Genetic Variations with Populations

Genetic Variation Within Populations

Evolution of Populations: Part I

KEY CONCEPT A population shares a common gene pool.

Year 10, Pathway C 2012 New Generations.

KEY CONCEPT A population shares a common gene pool.

KEY CONCEPT A population shares a common gene pool.

KEY CONCEPT A population shares a common gene pool.

GENE POOL All the genes of all members of a particular population.

KEY CONCEPT A population shares a common gene pool.

Section 7 Quiz Review.

KEY CONCEPT A population shares a common gene pool.

3 Ways Evolution Happens

Genetic Equilibrium Population genetics looks at evolution at the genetic level Types of Evolution: Convergent Evolution Different species evolve similar.

Selection and Adaptation Vocabulary

Diversity of Life Species Gene pool.

Sources of Variation.

KEY CONCEPT A population shares a common gene pool.

Genes and Variations 16:1.

Natural Selection Natural selection: organisms with favorable traits for a particular environment survive, reproduce, and pass these traits on to the next.

What is allele frequency?

KEY CONCEPT A population shares a common gene pool.

Copyright Pearson Prentice Hall

Vocab #21 Mr. Addeo.

Terms MT: Allele Frequency.

Population Size and Diversity

KEY CONCEPT A population shares a common gene pool.

V. How Does Evolution Work?

KEY CONCEPT A population shares a common gene pool.

Evolution of Populations

A population shares a common gene pool.

Genetic Variation with Populations

KEY CONCEPT A population shares a common gene pool.

Evolution of Populations

Presentation transcript:

Genetic Variation MT: Allele Frequency

Genetic means Genes DNA

Variation means: Differences variety

What causes genetic variation? A MUTATION: A change in DNA sequence Occur naturally or via chemicals or radiation

Quickwrite: Why is genetic variation important to a population?

Answer: If there is genetic variation, then some individuals in a species will be more fit than others. This ensures that some individuals of the population will survive if there are changes in the environment. If there is no genetic variation, then all individuals will be exactly the same. This could be deadly if there is a change in the environment. The population could be less fit to survive and reproduce.

Example: Which population of hares has a better chance of survival as a species? Population A Population B

Population B Because it has more genetic variation than population A so there will be some individuals that are more fit if the environment were to change. Thus the species has a higher chance of survival.

TAKE HOME MESSAGE: Variation good survival Genetic variation increases a species’ chance of survival Variation good survival