Advances in Genetics - Choteau Schools

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14 Δεκ 2012 (πριν από 4 χρόνια και 6 μήνες)

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Advances in Genetics

Chapter 5, Section 3

Genetic Engineering


What is a
gene again?


Section of the DNA located in
a chromosome that directs
the activities of a cell.

Genetic Engineering


What is
genetic
engineering?


Biological or chemical ways to
change the arrangement of
DNA in a gene.


Genetic Engineering


What is
genetic
engineering
used for?


Produce medicines


Change the functions of cells


Improve crops


Genetic Engineering


Recombinant
DNA


Inserts a section of DNA from
an organism into a bacterium.


Examples:


Production of insulin and growth
hormone.


Genetic Engineering


Gene Therapy


Normal alleles are inserted
into a virus.


Virus infects a target cell.


Normal allele replaces the
defective allele in the target
cell.

Genetic Engineering


Selective
Breeding


Selecting plants or animals to
breed together based on
desired traits.


Has been practiced for
thousands of years.

Genetic Engineering


Genetically
Engineered
Plants


Desired genes from one plant
are inserted into a different
plant.