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Selective Breeding

Selective Breeding. Warm Up. Each of these dogs is a member of the same species. Why is there so much variation within the species? Did these breeds develop naturally, or did humans influence the creation of these breeds? . Selective Breeding.

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Selective Breeding

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  1. Selective Breeding

  2. Warm Up • Each of these dogs is a member of the same species. • Why is there so much variation within the species? • Did these breeds develop naturally, or did humans influence the creation of these breeds?

  3. Selective Breeding • Selective breeding – the process of selecting a few organisms with desired traits to serve as the parents of the next generation • Inbreeding – parents have same traits • Hybridization – parents have different traits

  4. Inbreeding • Inbreeding– crossing two individuals with identical or similar sets of alleles • Offspring are very similar to the parents • Goal: produce organisms with specific traits • Ex: horses bred for speed, purebred dogs • Increases the probability of inheriting genetic disorders b/c no new alleles are introduced • Ex: hip dysplasia in many breeds of dogs

  5. Hybridization • Hybridization– cross two genetically different individuals • Goal: best traits of both parents • Ex: crops bred for disease resistance, hybrid dog breeds (ex: Labradoodles)

  6. Project • Selective Breeding Research Project

  7. Warm Up • The Jonagold apple is a sweet, plump apple produced from a cross between Jonathan apples and Golden Delicious apples. What is this process called? • Cloning • Inbreeding • Hybridization • Recombination • REMINDER: Test Corrections due today!

  8. Ex: Labradoodle 4. Characteristics of the Parents: 7. Labradoodles can suffer from some of the same genetic problems as their parents. Hip dysplasia & eye problems are the most common

  9. Edmodo • www.edmodo.com • Click “I’m a Student” • Enter your class code: 7th period – lyelr9 • Create a user name & password. Write it in your agenda! • Click “Sign up”

  10. Submitting Your Presentation • Click on “Turn In” 2. Attach using the “Link” button. Then, click “Turn in Assignment”.

  11. After You Finish the Presentation • Go to Edmodo. There is an assignment for you to complete listed there.

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