How do We Make Our World “better?” Biology Standard 5c and d Modifying our Living World with DNA!

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Presentation transcript:

How do We Make Our World “better?” Biology Standard 5c and d Modifying our Living World with DNA!

AKA Mating By choosing the “best” individuals of a species and breeding them, you can get the “best” offspring. Breeding

Allowing those orgs w/ desired characteristics (DNA) to produce next gen. Based on phenotype (what animal looks like) Genotype (DNA) codes for phenotype. Selective Breeding

Selective Breeding: Super Cow!

Selective Breeding Progression of Corn over time

Hybridization Crossing dissimilar individs to bring together best of both orgs. Can make orgs disease resistant; sterile!

Hybridization Liger

Hybridization: Zorse

Hybridization: Zedonk

Hybridization: Prizzly Bear

Hybridization: Tomacco

Hybridization: Wolf/Dog

Inbreedin g Continued breeding of individs with similar characteristics. Risky! Genetic defects! Too many recessive alleles (not dominant traits) Hemophilia: The Royal Disease: Queen Victoria X linked Hemophilia

Royal Pedigree

No Sex with Your Siblings! Inbreeding is dangerous b/c when 2 individs mate that are genetically similar, recessive disorders are kept inside the family and are passed to offspring.

Catalina Bison