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Transcript of Where Mrs. Hall should go Day 1(DNA) - slide 2 Day 2 (mitosis) – slide 17 Day 3 (meiosis) –...
![Page 1: Where Mrs. Hall should go Day 1(DNA) - slide 2 Day 2 (mitosis) – slide 17 Day 3 (meiosis) – slide 26 Day 4 (punnett vocab)- slide 43 Day 5 (co-dominance)](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649dff5503460f94ae864f/html5/thumbnails/1.jpg)
Where Mrs. Hall should go• Day 1(DNA) - slide 2
• Day 2 (mitosis) – slide 17
• Day 3 (meiosis) – slide 26
• Day 4 (punnett vocab)- slide 43
• Day 5 (co-dominance) -slide 57
• Day 6 (health)- slide 61
• Day 7 (genetic engineering)- slide 68
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DNA
- controls traits
deoxyribonucleic acid
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1950’s Dr. Rosalind Franklin
• used techniques to determine what chemicals were in DNA
• couldn’t figure out how they went together
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Dr. Watson and Dr. Crick
• figured out molecule was a twisted ladder , called it a double helix
• won a Nobel Prize • did not give Dr. Franklin any credit
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Cool facts about DNA
• cell’s DNA is 5 ft long• 10 trillion cells per body (low
estimate)• 50 trillion feet of DNA• reach from Earth to Sun 50
times !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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To build DNA• A= Adenine• T= thymine• C= cytosine• G= guanine • S= sugars• P=
phosphates
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Blob in center of cell is
•Nucleus
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Nucleus is made of•Chromosomes
•Humans have 46 (23 pair)
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Chromosomes have small sections called
•genes
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Genes are made of•DNA (deoxyribonucleic acid)
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Genes control
•Traits
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Karyotyping-
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Kevin Van Aelst
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Double helix (twisted ladder) shape discovered
by
•Watson and Crick (and Franklin)
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DNA VIDEO CLIP
• http://www.pbs.org/wgbh/nova/genome/program.html
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Cell division is Mitosis
• Write in- cells are doubling• in one celled organisms it is
called Fission • Occurs when cells need to grow
orRepairhttp://www.hhmi.org/biointeractive/dna/DNAi_packaging_vo2.html
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Name that cell game
• Who will be the last cell standing?
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Interphase• Nuclear membrane disappears, chromosomes double• ? # chromosomes now???? • 92• http://www.hhmi.org/biointeractive/media/DNAi_replication
_schematic-lg.mov
• http://www.hhmi.org/biointeractive/dna/DNAi_replication_vo1.html
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Prophase and
metaphase• Chromosomes line up in the
middle of the cell
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Anaphase• Chromosomes separate and
move to the end of cells
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Telophase• Nuclear membrane and cell membrane
reform• Cells pull apart• Don’t write!!!: started with a parent
cell and ended with 2 daughter cells
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Art and Science Kevin Van Aelst
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Websites• Mitosis clips • http://www.cellsalive.com/mitosis.htm • http://www.johnkyrk.com/mitosis.html • mitosis animation using real cell• http://www.teachersdomain.org/
resource/tdc02.sci.life.stru.dnadivide/
![Page 25: Where Mrs. Hall should go Day 1(DNA) - slide 2 Day 2 (mitosis) – slide 17 Day 3 (meiosis) – slide 26 Day 4 (punnett vocab)- slide 43 Day 5 (co-dominance)](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649dff5503460f94ae864f/html5/thumbnails/25.jpg)
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My how big your teeth are…
• How did they get so big?
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Meiosis
• Used to make reproductive cells
• Also called GAMETES• Gametes have half the number
of chromosomes as a body cell
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Gametes:
• Males make sperm in the testes• Females make eggs in the ovaries
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In plants
• Male part of the flower makes the pollen
• Female part of the flower makes the fruit and seeds
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Sketch fertilization and label the sperm and
egg
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http://learn.genetics.utah.edu/content/begin/cells/scale/
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Meiosis Video Clips
• Gamete formation (1/2way down)• http://www.contexo.info/DNA_Basics/
Meiosis.htm • Meiosis video clip• http://www.copernicusproject.ucr.edu/
ssi/HSBiologyResources.htm
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Mutation
• Caused by a change in the DNA in the nucleus
• An error occurs in the chromosomes during mitosis or meiosis
• Can be caused by UV rays, chemicals, or
• No reason at all.
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Mutations
• Not all mutations are harmful• Bigger beak in a bird, can eat
more and diff kinds of food• Parasite that can now infect a
human and not just a dog, • Good for the parasite!• Tulips mutate to make
different colors
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Mutation- polydactyly
• Boy in china with 31 digits
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CANCER• When mitosis is out of control, and
does not stop. Has many causes, some still unknown causes.
• “normal” cells have a point where they stop doing mitosis.
• Add this: causes: UV rays, drinking, drugs, nicotine (smoking, chewing), chemical exposure (asbestos)
• Cells are often bizarre and do not function.
• TUMOR: a mass of cancer cells in one spot
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Tumor
![Page 39: Where Mrs. Hall should go Day 1(DNA) - slide 2 Day 2 (mitosis) – slide 17 Day 3 (meiosis) – slide 26 Day 4 (punnett vocab)- slide 43 Day 5 (co-dominance)](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649dff5503460f94ae864f/html5/thumbnails/39.jpg)
Cancer from chew
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Skin Cancer
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cancer cam
• http://www.cellsalive.com/cam1.htm
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Mendel• Monk from 1800’s in Austria• Worked in the garden• Noticed some peas were tall, some
pea plants were short• Said,”hmmm, I wonder why?”• Next year, Planted seeds from tall
in 1 garden• Planted seeds from short in
another garden
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• Short garden, all the peas were short
• Tall garden some peas were tall, some were short
• Hmmmmm…….• Led to modern study of GENETICS
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Punnett Squares
• Used to determine the percent chance of a trait being inherited by the offspring
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Dominant Gene
• Always shows • Written with a capital letter
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Recessive Gene
• Only shows when there is only recessive genes present
• Written with a lower case letter
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B= brown hair b= blonde hair
• BB• Brown hair• Bb=• Brown hair• ..bb=• Blonde
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Cross a brown haired father (BB) with a blonde mother (bb)
• ______% brown haired
• _______% blonde haired
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Cross a brown haired father (Bb) with a brown haired mother (Bb)
• ______% brown haired
• _______% blonde haired
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B = black fur and w = white fur, cross a black guinea pig (Bw) and a white guinea pig
(ww) • _____% black guinea pig
• _____ % white guinea pig
• _____% gray guinea pig
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Baby gecko
• Mom = dad =
• SS which means• big scales• tt which means• short tongue• Mm which means• long tail• Nn which means • big nose
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• Click on millie melonhead to demo recessive and dominant inheritance
• http://nature.ca/genome/04/041/041_e.cfm
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Cross a Red flower (RR) x White flower (ww)
•Predict•% red•% white•% pink
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Cross a Yellow seed (yy) x Green seed (Gy)
• Predict• _____ % green seed• _____ % yellow seed
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• Zombies are nuts about brains
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Co-dominant or Incomplete dominance
• Both genes share• Both written as 2 different capital
letters (RW)
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RR= red cow WW= white cow RW= Roan cow
• Cross a roan cow with a white bull and predict
• _____% red• _____% white• _____% roan
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Cross a red flower (RR) with a Pink flower (RW)
• Predict • % red• % white• % pink
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Cross a male (XY) with a
female (XX)• _____% male• _____% female
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Genes and our Health
• If a gene undergoes a mutation, you might get an unwanted trait.
• Recessive genetic disorders only have the disease if you get the recessive gene from both parents
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Sickle Cell anemia• Pain, anemia( not enough rbc to
carry oxygen), serious infections, stroke (brain damage)
• Rbc’s get stuck in capillaries• Rbc have hemoglobin that carries
oxygen and carbon dioxide
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Cross Ss x Ss
• Predict• %healthy• % disease• % carrier
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Hemophilia
• Inherited on the X chromosome• Keeps you from clotting, so you
bleed easily
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Cross XXh x XY
• Predict• %healthy• % hemophiliac (disease)• % carrier
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Genetic Engineering
• Create stronger plants and animals by implanting genes that have the desired trait
• http://www.iptv.org/exploremore/ge/what/recombinant.cfm
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Examples of genetic engineering
• Tomatoes are given stronger cell walls; don’t crush in grocery bag
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Examples of genetic engineering
• Corn is made resistant to fungus or insect invasions
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Examples of genetic engineering
• Bacteria can make PURE human insulin to treat diabetes
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More examples• Grow arteries from the
patient to do heart surgery• Genetic engineering has
created a chicken with four legs and no wings
• Yikes…if a peanut gene is put into a corn plant so corn has higher protein….will kids allergic to peanuts get sick?
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Rat with human ear on back (for transplant
purposes)
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• http://www.feathersite.com/Poultry/CGA/Andal/BlueAndalGroup.JPEG blue chicken
• Black andalusian chicken http://www.feathersite.com/Poultry/CGA/Andal/Callie.JPEG
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• http://nature.ca/genome/04/041/041_e.cfm activities to demo cloning,
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