Genetic Engineering – Ch. 13 Selective Breeding

whooshdisguisingBiotechnology

Dec 14, 2012 (4 years and 10 months ago)

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Genetic
Engineering


Ch. 13

Selective Breeding


Used by humans to pass desired traits
from one generation to the next


Animals with desired traits breed


Domestic animals


Inbreeding


continued breeding of individuals
with similar characteristics to keep lines “pure”


Plants


Hybridization


cross dissimilar individuals to
bring together best of both worlds

DNA Fingerprinting


Analyze sections of DNA that have
little or no known function


Sections that vary widely from one
individual to another


Positive ID has similar marker to
mother AND father


Remember you get your chromosomes
from both your mom AND your dad


Uses gel electrophoresis


gel setup
between two poles; positive charge
on one end and negative on the
other


Amino acids have different charges
and travel along the gel depending
on that charge


Figure 14
-
18: which suspect
matches the evidence?

Cloning


Ch. 13


Donor cell taken from original animal


Fused with egg cell with no nucleus


Fused with electric shock


Dolly


First mammal cloned


Offspring genetically IDENTICAL to
parent/donor


CC (Carbon Copy): Cat that was
cloned


http://www.msnbc.msn.com/id/30769
08/

Human Genome Project


Scientists working on full set of
chromosomes/DNA sequence of
humans


Look at haploid set of chromosomes


Human genome
-

~3 billion base
pairs

Stem Cells


Unspecialized cells with the potential
to become a variety of cells


Taken from embryos or umbilical
cord


Moral and ethical objections


Immune system may reject stem
cells


Mouse cells used to date


In 2009 President Obama lifted the ban on
embryonic Stem Cell research placed by the
Bush Administration.



http://school.nettrekker.com/goExternal?np=/ext
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tName=school&HOMEPAGE=H



What do you think? On a separate sheet of
paper, put your name and the date. Choose a
side. Pro Stem Cell research or Anti Stem Cell
research? Defend your argument with
examples.