Do Now: DO You Remember?... Describe the shape of DNA. What
enzyme unwinds and unzips DNA to make RNA? Explain how you think a
cut heals.
Slide 2
Guide to Taking Notes Be sure to write down the essential
questions. Focus on what is in red. Anything in red is Must to copy
in your journal. Green is optional Blue is mostly for refocusing or
titled. Try to use the same formatting as shown.
Slide 3
Unit 2: Genetics and Biotechnology Unit Essential Question:
What is DNA and how does it carry the coded instructions that allow
cells to function properly?
Work for the Week: 3/31 4/4 Formative: Do Now(s) 15pts. Exit
Tickets vary. Onion Root Computer Lab 30pts. Mitosis w/Yarn Lab
50pts. Mr. Potato Head Lab 50pts. Summative: Mitosis Quiz 20pts.
Meiosis Quiz 20pts.
Slide 6
Lesson #1: Cell Cycle: Transmission of Genetic Information LEQ:
What is the process of cellular growth?
Slide 7
Big Idea: Cells Reproduce. All cells must go through some phase
of reproduction in order to grow. Most cells go through a life
cycle. Two main phases: Interphase Expansion Mitosis Division
Slide 8
Big Idea: A cell must expand before it divides. Interphase: 3
sub phases: G 1 (First Growth) Cell grows rapidly. Biggest part of
interphase. S (Synthesis) DNA Replication occurs. Chromosomes
become chromatids. G 2 (Second Growth) Prepare for division.
Slide 9
Match It Up!! For each phase that is described 1. Lay out the
Title 2. Place the picture underneath
Slide 10
Big Idea: There is order in the division.
_______________________________. Mitosis: Nucelar Division 4 sub
phases: Prophase Nuclear envelope dissolves. Chromatids condense
and pair up and Spindle Fibers Form
Slide 11
Draw It Up!! For the phase you just matched Draw it in your
journal/notebook
Slide 12
Mitosis: Nucelar Division 4 sub phases: Metaphase Chromatids
line up along the metaphesial plate (middle line) Big Idea: There
is order in the division. ____________________________
Slide 13
Draw It Up!! For the phase you just matched Draw it in your
journal/notebook
Slide 14
Mitosis: Nucelar Division 4 sub phases: Anaphase Spindle fibers
pull apart the chromatids at the centromere and the chromosomes
move to opposite poles of the cell. Big Idea: There is order in the
division. ____________________________
Slide 15
Draw It Up!! For the phase you just matched Draw it in your
journal/notebook
Slide 16
Big Idea: There is order in the division.
____________________________ Mitosis: Nucelar Division 4 sub
phases: Telophase Nuclear envelope appears at the pole and
chromosomes uncondensed.
Slide 17
Big Idea: There is order in the division. One to Two!!
Cytokinesis: Cytoplasm splits Cell Membrane is pinched in half to
enclose each cell. Cleavage Furrow
Slide 18
Lets Find Out What phase of the cell cycle does a cell spend
most of its time? Grab a laptop and pair up Go to the following
website: http://www.biology.arizona.edu/DEFAULT.html
Slide 19
Exit Ticket This is worth 10pts. Place in bin when done Be sure
your name and class period are noted on the ticket. See You Next
Time!!
Slide 20
Slide 21
Do Now: What can you Infer?... Take 7min. to use your notes and
answer the Do Now.
Slide 22
In a NutShell
Slide 23
Mitosis Worksheet
Slide 24
Big Idea: Cells have a series of Red Light Green Light Switches
that regulate feedback information. Checkpoints : G 1 Cell growth
Checkpoint Determines if the cell should divide AKA: The Resting
Period Some Muscle & Most Nerve Cells are in this. G 2 DNA
synthesis Checkpoint DNA Replication gets checked by certain
enzymes M Mitosis Checkpoint Gets triggered at the end of Mitosis
Prompts cell into G 1
Slide 25
Big Idea: Sometimes a Cell can lose control. Cancer :
Uncontrolled Cell Growth Disorder of Cell Division
Slide 26
Slide 27
Lesson #1b: Cell Cycle: Transmission of Genetic Information
LEQ: What does the process of cellular growth involve?
Slide 28
Mitosis Lab: Karyotype
Slide 29
Big Idea: DNA is tightly winded (coiled) in the nucleus. DNA is
very, very, very loooooong!! Chromosomes: Made up of DNA and
protein. Condensed packages of DNA. Vary in size Contain all
genetic information of an organism
Slide 30
Big Idea: When chromosomes pair up an X formation is shown.
This ensures that the genetic information remains intact.
Slide 31
Big Idea: Chromosomes are only seen during division Makes it
easy for a cell to divide During prophase, just before metaphase is
when you can clearly see the chromosomes. Scientists suspend cells
in this phase in order to read the overall genetic viability of a
person: Karyotyping
Slide 32
Karyotyping!! Organizing Chromosomes to determine ones genetic
composition.
Slide 33
Slide 34
Mitosis Lab: Karyotype
Slide 35
Slide 36
PUT ALL ELECTRONICS AWAY
Slide 37
Lesson #2: Cell Cycle: Transmission of Genetic Information LEQ:
What processes allow genetic information to differ?
Slide 38
Big Idea: There are two types of cells. Not all cells divide at
the same rate. Gametes: Sex Cells Found only in sex organs Include:
Ovaries (Eggs/Ova) Testes (Sperm) Haploid Chromosome Number, n
Undergo Meiosis Somatic: Body Cells Majority Consist of: Diploid
Twice the Chromosome Number, 2n Undergo Mitosis MuscleSkin
BrainFat, etc.
Slide 39
PUT ALL ELECTRONICS AWAY
Slide 40
102 46 48 1260 Big Idea: Body Cells have twice the amount of
chromosomes than Sex Cells. More Body not enough SexCells that is
This is called the Diploid Number This number varies for organisms
but are consistent for their species.
Slide 41
Haploid/Diploid Worksheet
Slide 42
Slide 43
Lesson #2: Cell Cycle: Transmission of Genetic Information LEQ:
What processes allow genetic information to differ?
Slide 44
Big Idea: Sex Cells undergo division twice. They end up with
half of the Diploid Number This is called the Haploid Number Only
seen in sexual reproductive organisms.
Slide 45
Big Idea: Sex Cells undergo division twice. They end up with
half of the Diploid Number Meiosis: Specialized Nuclear Division
The process of creating gametes (sex cells) Spores Sperm Ova
Involves 2 divisions: Meiosis I Meiosis II
Slide 46
Big Idea: Sex Cells undergo division twice. They end up with
half of the Diploid Number Meiosis: Specialized Nuclear Division
Like Mitosis includes the following phases: Prophase IProphase II
Metaphase IMetaphase II Anaphase IAnaphase II Telophase ITelophase
II
Slide 47
Big Idea: Sex Cells undergo division twice.
Slide 48
Big Idea: There is too much information to pass on. Meiosis I:
Rewriting Period AKA: Primary Division Crossing Over occurs during
this period Chromatids exchange information Happens during Prophase
I TWO Daughter Cells that are different 2n 2 2n Information gets
rewritten and new versions are created.
Slide 49
Big Idea: There is too much information to pass on. Information
gets rewritten and new versions are created. Meiosis II: Separation
Period AKA: Secondary Division Independent Assortment Alignment
during metaphase is random FOUR Daughter Cells that are different 2
2n n, n, n, n
