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The Cell Cycle S Mitosis G1 G2 Interphase Telophase Anaphase Prophase Metaphase

Big picture: We need to make more cells

Interphase Cell Grows and replicates DNA

S phase replicates DNA Interphase G1 S G2

Here is what DNA looks like in chromosome form

So if I have two chromosomes and I replicate them Replicates

If I have 10 they go through S phase…. DNA Replicates

So if humans have 46 then they are replicated….

We have an issue… too much chromosome for one cell Now we will begin the process of splitting the replicated chromosome( ) and making 2 IDENTICAL cells PMAT

Now Mitosis Begins Prophase: Chromosome Appear, nucleus breaks down

Metaphase- Chromosomes Line up so they can be split Where’s the nucleus??

Anaphase-Chromosome Split Where’s the nucleus??

Telophase 2 nuclei

Cytokinesis

If I have 46 chromosome before mitosis starts, how many do I have afterwards???

If this potato has 32 Chromosome before mitosis, how many after?? 32!

If Jerry has 987 chromosomes before mitosis how many after mitosis?

Mitosis Used for Growth and repair

How many cell divisions??? 2 Meiosis How many cell divisions??? 2

Notice the homologous pairs line up NEXT to each other Crossing Over

Crossing Over leads to increased__________ Genetic Diversity

Meiosis leads to the production of _________ Specifically…. Gametes

46 23 23 23 23

So if Forrest Gump has 48 Chromosomes… How many in each gamete after meiosis? 24

If Patrick has 102 chromosomes before Meiosis how many in each gamete after? 51

Cancer is _____________ Cell growth Uncontrolled

DNA fingerprinting… who did it?

Where is the trisomy?? Trisomy 21

What is this process called? Transcription mRNA