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AP Biology Mitosis & Meiosis LabsNatalia Sivackova
BACKGROUND INFORMATIONProcesses of cell division 2 types Mitosis: parent cell produces two “daughter” cells that are genetically identical Meiosis: parent cells divide and produce the gametes that give rise to new individuals
LAB 1 “Study the process of mitosis using slides of onion root tips or whitefish blastulae”
Cell Cycle Process called karyokinesis: Prophase Metaphase AnaphaseTelophase Process called cytokinesis
Interphase Prophase Metaphase Anaphase Telophase Cytokinesis
Homologous ChromosomesWhat genome is composed of Similar but not identical Carries same genes in same order But alleles for each trait might not be the same
Synapsis Crossing over (prophase 1) Come togetherSections are exchanged Both parents
LAB 2 “Observing the crossing over in a fungus Sordania”
Meiosis occurs in haploid ascosporesProduces spores of different colors Fertilization occurs when growing filaments meet Zygotes form Meiosis occurs in haploid ascospores
Sources: /lab3/spores2.html (pictures, labs, and information)
Mitosis and Meiosis Lab.
Section F Mitosis and Meiosis 2013,April Department of Cell Biology School of Basic Medical Sciences Xinjiang Medical University Nafeisha Kadeer.
What is mitosis? The way cells divide to produce more body cells.
Interphase Cytokinesis Telophase Anaphase Metaphase Prophase What looks similar between mitosis and meiosis? What looks different?
30 Seconds 10 Time’s Up! 3 Minutes 1 Minute 4 Minutes Minutes
Meiosis 10/29/09. What can you tell me about Mitosis?
Sexual Reproduction and Genetics Chapter : Meiosis MAIN IDEA: Meiosis produces haploid gametes.
Mitosis, Meiosis, and Life Cycles Chapter 12. KEY TERMS DIPLOID (2N) DIPLOID (2N) The condition of having two sets of chromosomes per nucleus The condition.
Diagram a cell with four chromosomes going through meiosis.
How Cells Divide Chapter Cell Division *growth and repair *reproduction.
Human body cells have 46 chromosomes Meiosis Sexual Reproduction and Genetics Each parent contributes 23 chromosomes Section 1 Homologous chromosomes—one.
1 Review Write a summary of each phase of meiosis Use Analogies Compare the chromosomes of a diploid cell to a collection of shoes in a closet. How are.
Meiosis Cell division in sex cells that produces gametes containing half the number of chromosomes as a parent’s body cells (somatic cells)
1 Meiosis. 2 To help you understand about DNA…. How is DNA passed from parent to offspring? There are two main ways that DNA is passed from parent to.
Bellwork Draw this in your notes and fill in the phases of mitosis.
Chromosome Number - Is how many chromosomes a cell has
What are we learning today?
Boo-Yah Biology! Meiosis Molecular Biology Sumner HS.
Meiosis. What is it? A special type of cell division of the reproductive cells – egg and sperm Meiosis is similar to which other cell division? Mitosis.
Sexual Division of Cells
Do Now!! o Now What is the purpose of Mitosis?
Intro to Meiosis. Remember Mitosis Produces two daughter cells with chromosomes identical to the parent cell. Each having 46 chromosomes. There is said.
Section Chromosome Number An organism with 2 parents must inherit a single copy of every gene from each parent. When gametes are made, the 2 sets.
Slide 1 of 35 Copyright Pearson Prentice Hall biology.
Meiosis. Now that you know all about DNA…. How is DNA passed from parent to offspring? How is DNA passed from parent to offspring? There are two main.
Meiosis The ability to pass on traits is called heredity. – This ability is one of the unifying themes of biology as individual units of heredity (genes)
Meiosis Pgs Modified by Liz LaRosa 2011.
3.02: Cell Types and Chromosome Number In an organism, there are somatic cells and there are sex cells. o Somatic cells are all of the body’s cells that.
How does Meiosis differ from Mitosis Students will know they are successful when they can……….. 1.Explain the reduction of chromosome number that occurs.
Chapter 10.1, Meiosis.
Reproduction & Embryology. Diploid and Haploid Cells.
AP Biology The Cell Cycle: Cell Growth, Cell Division, Mitosis & Meiosis.
___1. MITOSIS A. reproductive cells ___2. MEIOSIS B. produces genetically identical cell ___3. GAMETES C. exchange of genes between two homologous chromosomes.
Cell Division Meiosis Relationship Between Meiosis and Genetics Meiosis results in egg (females) and sperm (males) cells. When egg and sperm combine.
Cell Reproduction Meiosis Notes. Why does meiosis occur?
Lab 3: Mitosis & Meiosis.
Meiosis and Fertilization my-OH-sis. Meiosis is cell division used for: Producing gametes (sex cells) What is Meiosis? ***Makes 4 different cells!***
BSC 2010L. Prokaryotic Cells Divide by binary fission Produces “clones” Only have to worry about 1 circular chromosome Eukaryotic cells have many linear.
10.1 Meiosis Learning Targets: Describe chromosomes in the phases of meiosis. Outline chiasmata in crossing over. Explain how meiosis results in genetic.
How are chromosomes put together? How do new cells get their chromosomes? How do new organisms get their chromosomes? Compare and contrast these two processes.
Answer the following question in a complete sentence.
Review: 1. What is mitosis? 2. What are the stages of mitosis? Process of Cell Division Prophase, Metaphase, Anaphase, Telophase.
The Cell Cycle: Interphase, Mitosis and Cytokinesis
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