The example of the picture is an example of what strange concept
we discussed?
How would you or the person that bred Dachshunds create them?
Meaning what are the steps to make these designer dogs?Answer take
a small breed of dog and breed with another small breed and then
continually take the smallest of the litter and breed them. They
were designed to chase foxes during fox hunts. They purposely breed
small dogs, each surviving litter only the smallest were breed with
other small dogs of another litter of the same breed. One of the
earliest Selective breedingDo now:
Dog variations
2HomeworkDue Monday: Read Chapter 15, section 1 pages 418-420.
This will be the last thing we cover before Final Exams. This
covers Selective Breeding (which is what Gattaca was all about)From
the quiz: At the very end of the movie Gattaca, Dr. Lamar asks
Vincent for a urine sample. Vincent was surprised by this final
test and was completely caught off guard. Dr. Lamar brought up his
son to Vincent, but Vincent was too focused on being exposed. What
did the doctor do next and why? How did you answer?
What are the 4 types therapy?1. A normal gene may be inserted
into a nonspecific location within the genome to replace a
nonfunctional gene. 2. An abnormal gene could be swapped for a
normal gene.3. The abnormal gene could be repaired through
selective reverse mutation, and returns it normal function4.The
regulation (the degree to which a gene is turned on or off) of a
particular gene could be altered.
Gene therapy ReviewAre the traits of Cystic Fibrosis &
Sickle Cell actually an evolutionary advancement?Explain
Cystic Fibrosis & Sickle CellOrganisms that face
environmental change have 3 choices1. Adapt to the change in
environment2. Move away from the new condition3. DieNatures way to
deal with changePurposely adding in variation (mutation) to improve
the breed. Following Spring break we will do a lab using GMO crops.
It is an example of Biotechnology. We are adding in a seed that was
modified to stop weeds from growing. Is there a
concern?BiotechnologyWhat are genetically modified organisms?Think
back to the Do Now. Why are they important?Are their risks or
controversies? Something to considerFor example: Can they clone an
animal that has long since gone extinct? Yes!Should they create a
Jurassic Park?Something to consider
What is hybridization?Take the best of various crops and make a
crop that is specialized.Make the crops an almost certain success
as opposed to a gamble with nature.Can make crops suited for the
environment even though they typically do not grow in a area or
time of year?Yes!Positives of Genetically Modified cropsCan become
invasive if resistant to certain conditions then they could take
over an area.How will animals and people react to these new strains
of crops?For example, why are more people today have an allergy to
foods (wheat, nuts,)?Problems of Genetically Modified cropsGM
crops
The condition in which a normally diploid cell or organism
acquires one or more additional sets of chromosomes. In other
words, the polyploid cell or organism has three or more times the
haploid chromosome number. Polyploidy arises as the result of total
nondisjunction of chromosomes during mitosis or
meiosis.PolyploidsUsed in plants because they are create bigger and
stronger than a typical diploid. Typically found in bananas, citrus
fruits, also cottonPolyploids in plantsThe goal is to determine
common sequences that promote or disrupt normal human growth. For
example markers for cancer.
New material