weird genetics
DESCRIPTION
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 PresentationTRANSCRIPT
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Weird Genetics
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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?