Asexual Reproduction

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1Asexual ReproductionMitosisMitosis is the process in which the cells divides to form two cells. Why do you think cells must divide?1Ready?Begin!3:00Mitosis is the process in which the cells divides to form two cells. Why do you think cells must divide?

2:00Mitosis is the process in which the cells divides to form two cells. Why do you think cells must divide?

1:00Mitosis is the process in which the cells divides to form two cells. Why do you think cells must divide?

TIMEs UP!

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7Asexual ReproductionMitosisMitosis is the process in which the cells divides to form two cells. Why do you think cells must divide?

ANALYZE (break apart, study the pieces) There is a question within a question in this DSQ. Can you identify the question within the DSQ? 7How do little elephants grow up to be BIG elephants?

Why do animals shed their skin?

Daily NotesWhat are the reasons cells divide?

Three reasons why cells reproduce by mitosis:

1. Growth 2. Repair 3. Replacement

Skin cancer - the abnormal growth of skin cells - most often develops on skin exposed to the sun.

Cell that reproduce by asexual reproduction reproduce constantly. Daily NotesOpen your books to page Page 97

Goal for today: Identify the stages in meiosis

Did you meet your goal today?4 I can teach the steps of meiosis to someone else3 I can explain the steps but dont understand what they mean 2 I can remember most of the steps1 If someone give me hints I can explain some of the steps of mitosis0 I have no idea what youre talking about Animated Mitosis Cyclehttp://www.cellsalive.com/mitosis.htm

InterphaseProphaseMetaphaseAnaphaseTelophase & CytokinesisInterphase occurs before mitosis beginsChromosomes are copied (# doubles)Chromosomes appear as threadlike coils (chromatin) at the start, but each chromosome and its copy(sister chromosome) change to sister chromatids at end of this phaseCELL MEMBRANENucleusCytoplasmInterphase

Animal CellPlant CellPhotographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htmProphase 1st step in MitosisMitosis begins (cell begins to divide)Centrioles Chromatins are visibleCentriolesSister chromatidsSpindle fibersProphase

Animal CellPlant CellPhotographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htmSpindle fibersCentriolesMetaphase 2nd step in MitosisChromatids (or pairs of chromosomes) attach to the spindle fibers.CentriolesSpindle fibersMetaphase

Animal CellPlant CellPhotographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htmAnaphase 3rd step in MitosisChromatids (or pairs of chromosomes) separate and begin to move to opposite ends of the cell. CentriolesSpindle fibersAnaphase

Animal CellPlant CellPhotographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htmTelophase 4th step in MitosisTwo new nuclei form. Chromosomes appear as chromatin (threads rather than rods).Mitosis ends.NucleiNucleiChromatinTelophase

Animal CellPlant CellPhotographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htmCytokinesisoccurs after mitosis Cell membrane moves inward to create two daughter cells each with its own nucleus with identical chromosomes.Animal Mitosis -- Review

Interphase Prophase Metaphase Anaphase Telophase Interphase

Plant Mitosis -- Review

Interphase Prophase Metaphase Anaphase Telophase Interphase

Friday WOWWWWWWWWWW

Look up your Vocab!Mitosis- page 95DNA- page 93Interphase- page 94Cytokinesis - page 95Cell Cycle- page 94Chromosomes- page 93MieosisHaploid vs diploid

Daily NotesWhy must cells divide in mitosis?

1. Growth2. Repair3. Replacement4. Reproduction

30REMEMBER!InterphaseProphaseMetaphaseAnaphaseTelophaseCytokinesisIPMATC31A mnemonic to help remember the stages of mitosis.Cell Cycle32

Mitosis Animationhttp://www.cellsalive.com/mitosis.htm Single sex cells are called gametes (sperm/egg)

Zygote- fertilized egg

the process of nuclear division where the number of the chromosomes is halved.produces four daughter cells all daughter cells are haploid chromosomes are shuffled in the process, so that each daughter cell has a unique combination used to create gametes (sperm and egg)

Mitosis creates diploids (full set of chromosomes)

Meiosis creates haploids(half # of chromosomes)

Goal for today: Identify the stages in meiosis

Did you meet your goal today?4 I can teach the steps of meiosis to someone else3 I can explain the steps but dont understand what they mean 2 I can remember most of the steps1 If someone give me hints I can explain some of the steps of meiosis0 I have no idea what youre talking about 39

39Asexual ReproductionMitosisMeiosis is the process in which sex cells divides twice to form 4(not 2) sex cells with half the chromosomes. Why do you think cells must divide with only half of the chromosomes?39Ready?Begin!3:00Meiosis is the process in which sex cells divides twice to form 4(not 2) sex cells with half the chromosomes. Why do you think cells must divide with only half of the chromosomes?

2:00Meiosis is the process in which sex cells divides twice to form 4(not 2) sex cells with half the chromosomes. Why do you think cells must divide with only half of the chromosomes?

1:00Meiosis is the process in which sex cells divides twice to form 4(not 2) sex cells with half the chromosomes. Why do you think cells must divide with only half of the chromosomes?

TIMEs UP!

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45Asexual ReproductionMitosisMeiosis is the process in which sex cells divides twice to form 4(not 2) sex cells with half the chromosomes. Why do you think cells must divide with only half of the chromosomes?

Half from mom half from dad! When they join together they form a whole baby!

45THIS IS NOT A QUIZ1)What are the two ways cells divide?2) What cell division occurs only in sex cells?3) What phase in the cell cycle is the most common?4)Explain the difference between mitosis and meiosis using at least 3 examples

THIS IS NOT A QUIZ1)What are the two ways cells divide?2) How many cells are created in mitosis3) How many cells are created in meiosis4) What cell division occurs only in sex cells?

Daily NotesCompare and contrast meiosis and mitosis. Page 106

Vocab pageGameteZygoteDiploidHaploidMeiosis

Cell DivisionWhat is the purpose?What is the purpose?Stages of _______________Include imagesStages of _______________Include imagesTicket out of the doorExplain the main phases of mitosis.

What phase does the cell begin to divide?

What are the reasons cells divide?

Goal for today: Compare and Contract mitosis vs meiosis

Did you meet your goal today?4 I can teach the differences of mitosis and meiosis to someone else3 I can explain the differennces but dont understand what they mean 2 I can remember one of the cell division proceses1 If someone give me hints I can explain some of the steps of mitosis0 I have no idea what youre talking about Did you meet your goal?Compare and contrast mitosis and meiosis