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Weird Genetics

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Weird Genetics. What happens if there is a mistake in the order of the bases on the protein ?. Mutations. A change in genetic information. Mutations occur when there is a error in the order of the amino acids on the protein. Ex. Deletion, substitution, insertion (extra) - PowerPoint PPT Presentation

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Page 1: Weird Genetics

Weird Genetics

Page 2: Weird Genetics

What happens if there is a mistake in the order of the bases on the

protein?

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Mutations

http://www.accessexcellence.org/

A change in genetic information

•Can occur randomly (naturally)

•Or can be deliberately caused in the laboratory by scientists

•Inherited

•Not always harmful

Mutations occur when there is a error in the order of the amino acids on the protein.

Ex. Deletion, substitution, insertion (extra)Ex. Sickle cell anemia

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Mutagen

• Is a physical or chemical agent that causes a mutation in DNA.

Ex. Radiaton

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Genetic Counselor

• Is a person that provides information on genetics to couples who wish to have children when they are worried about passing on diseases.

Hello,

I’ am Ms. Jacobs!

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Natural Mutations

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ALBINOS

• Little or no pigmentation in the eyes, skin, and hair (or in some cases in the eyes alone).

• Inherited an altered copy of a gene that does not work correctly.

• The altered gene does not allow the body to make the usual amounts of a pigment called "melanin".

• True albinos have pink eyes and skin.

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White Bengal Tiger

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These are not albinos; they

have pigmented eyes.

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HUMAN INTERVENTION

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Designer Genes

Selective Breeding

Ex. Different dog breeds

Genetic Engineering

Ex. Dolly the cloned sheep

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SELECTIVE BREEDING

The selection of certain seeds or animals for

reproduction in order to influence the traits inherited

by the next generation.

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Pedigree

• The diagram that shows a family trait moving generations.

DAD MOM

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SELECTIVE BREEDING

• The Liger is the result of breeding a female Tiger to a male Lion.

• The liger has both stripes and spots. The stripes are inherited from its tiger parent and the spots from the lion parent.

• On their hind legs, ligers stand approximately 12 feet tall. At most, ligers may weigh up to 1,000 pounds.

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The Cama is the result of breeding a Llama to a Camel.

Parents in background of picture.

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The Zebroid is the result of breeding

a female Horse and a male Zebra.

The Zedonk / Zonkey is the result of breeding a female Donkey and

male Zebra.

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Geep - These are the result of a sheep and a goat.

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The Mule is the result of breeding a female horse(mare) to a male donkey (jack). The

mule is superior to the horse in strength,endurance, intelligence and disease resistance.

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GENETIC ENGINEERING

The selective, deliberate change of genes (genetic material) by man.

The technique of removing, modifying or adding genes to a

DNA molecule in order to change the information it contains.

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Bright face of genetically modified corn plant: pest-infected non-GM (left) and pest-free GM plant (right)

planted side-by-side in a field trial. (photo: Dr. Yu Jialin, China Agricultural University)

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French genetic researchers genetically modified Alba for artist Eduardo Kac. Thanks to genes borrowed from a jellyfish, the albino rabbit glows green when placed under special lighting. In regular light, Alba appears like any other furry white rabbit. But place her under a black light, and her eyes, whiskers and fur glow a otherworldly green.

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"Glow in the dark" fish. these genetically modified fish were developed by a Taiwanese aquatic firm, Taikong Group. They are planning to reproduce these fish in numbers and sell them for pets.

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Scientists in the agriculture department of the Hebrew University in Rehovot have genetically

engineered a chicken that has no feathers.

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Think About It:

If you were going to breed two animals together,

what would you pick and why? What traits of each

parent animal do you think it would keep?