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Quiz Wiz- Focus on Meiosis On a sheet of paper write down 1-15.
Quiz Wiz- Focus on Meiosis On a sheet of paper write down ANSWERS
1. Metaphase 1
2. Prophase 1
3. Anaphase 1
4. Cytokinesis 1- nuclear membrane should be re-formed and DNA in form of chromatin
5. Telophase 1
6. Metaphase 2
7. Prophase 2
8. Telophase 2
9. Anaphase 2
10. Cytokinesis 2- Female (oogenesis)
11. Cytokinesis 2- Male (spermatogenesis)
13. Crossing over
15. Sister chromatids
Mitotic Cell Cycle Review Take out a sheet of paper and write down questions 1-20.
Meiosis Is a form of cell division that halves the number of chromosomes when forming specialized reproductive cells (gametes).
PHASES OF MITOSIS. WHICH PHASE? (1) Telophase Telophase.
Honors Biology Spring With a neighbor, discuss the following: What is meiosis? How does it differ from mitosis?
11-4 Meiosis I. Chromosome Number A. Homologous- corresponding chromosomes, one from the male and one from the female. B. Diploid - A cell that contains.
Meiosis The Production of Sex Cells. How many chromosomes does a human body cell have? 46.
11-4 Meiosis Pg A. Purpose of Meiosis 1. Make reproductive cells (sex cells). 2. Reduces chromosome # in half.
Mitosis & Meiosis. Chromosome Structure Chromatin – Thin, uncoiled strands of DNA & proteins (histones) Chromosomes – Rod-shaped structures composed.
Cell Reproduction Meiosis aka Cell Division. Meiosis Cell division where one diploid cell (2n) produces four haploid (n) cells called sex cells or gametes.
The cell cycle Mitosis is only one section of the life cycle of a cell. Interphase is the main part of the cell cycle. This is where DNA is replicated.
P Meiosis. Meiosis “is a process of nuclear division that reduces the number of chromosomes in new cells to half the number in the original cell”
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 4.8 Mitosis maintains the chromosome number of the parent.
Gamete Production. 1 ST MEIOTIC INTERPHASE DNA Replicates (“S” stage) Centrosomes Nucleus DNA Chromatin forms.
Meiosis Meiosis – M phase that occurs in the ovaries (females) or testes (males) of an organism to create gametes or sex cells Produces 4 haploid cells.
Meiosis Division of sex cells. Meiosis Cell Division to make 4 new, genetically different sex cells.
Gametes – sex cells Gametes fuse fertilization zygote Gametes are formed by meiosis Somatic cells – all other cells but sexual cells Every.
What do they do? Stages What’s Going on? What is It?
Meiosis Review. Meiosis I: Replication Interphase I DNA Replication DNA Replication Chromatin a ball of yarn Chromatin a ball of yarn.
Meiosis Chapter 11 Sec. 4. Meiosis Reduces # of chromosomes to half Diploid (2n) to haploid (1n)
Mitosis = New Cells Results in 2 identical daughter cells 4 chromosomes 4 chromosomes.
Meiosis Forming haploid cells for sexual reproduction.
Meiosis A double cell division to produce sex cells (sperm and egg)
Cell Division - Meiosis. Meiosis Process of cell division that reduces the number of chromosomes in new cells to half the number in the original cell.
MEIOSIS Chapter 11. I. Meiosis A. Nuclear division that produces sex cells /gametes B. In REPRODUCTIVE ORGANS only C. 2 divisions: Meiosis I & Meiosis.
Cell division Meiosis. In meiosis, a single diploid cell gives rise to 4 haploid cells. Occurs in two distinct stages, Meiosis I and Meiosis II.
Cell Division and Reproduction Asexual and Sexual reproduction By : D. Reis.
MEIOSIS What is it? What is it? Making of gametes Making of gametes Sex Cells Sex Cells Sperm (pollen) in males Sperm (pollen) in males Eggs (ova) in females.
Grade 11 University Biology Miss MacKay. Meiosis A special type of cell division that occurs in the gonads Purpose: to create haploid reproductive cells.
Meiosis Overview. Sexual Reproduction Defined: Gametes from two separate parents unite Meiosis: Diploid (2n) to haploid (n) cells Mechanism that allows.
Meiosis Guided Notes Ramshaw – Biology. Interphase… Interphase happens at the start of _____________ as well as mitosis. Prior to prophase I, the cell.
12345 M phase G 2 phase S phase G 1 phase.
Chromosome structure. Chromosomes Example - an organism is 2n = 4. Chromosomes 1 & 2 are homologous chromosomes Chromosomes 3 & 4 are homologous chromosomes.
MEIOSIS Making gametes for reproduction. Meiosis Type of cell division where ONE body cell produces FOUR gametes –Each gamete* contains half the number.
Pass up your signed progress reports & then open your notebooks to the journal section.
Meiosis and Sexual Reproduction. Meiosis Reduction/Division Reduction: Process takes a ______ cell with two sets of chromosomes and reduces it to a _________.
Aim: Why is meiosis important? Do Now: Label each phase of cell division (IPMATC)
Meiosis occurs in what type of cells? Reproductive cells (the ones that divide to form sperm and eggs) What is “reduction division?” -Cell division that.
MITOSIS MEIOSIS Parent cell (2n) Figure 9.17 Mitosis and Meiosis: A Comparison.
(1) Big Ideas: Meiosis is used to make more sex cells. Meiosis happens in stages like mitosis. Meiosis divides twice. Happens in Stages: –DNA condenses.
Federoff. Interphase Chromosomes Duplicate Prepares to Divide.
MitosisMeiosis Start Diploid End DiploidHaploid
Biology 30 Unit 2: Reproduction and Development Cell Division & Life Cycles.
Cell Division – a review. Cell Cycle Control: What happens at each checkpoint? M = mitosis (nuclear division) C = cytokinesis (cytoplasmic division) G.
Meiosis!! Chapter 10. Meiosis Purpose: to make sex cells Gamete: sex cell Male gamete= sperm Female gamete= egg (ovum)
Meiosis Notes. Meiosis Process of reduction division in which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes.
Meiosis Division of Sex Cells. Meiosis A process of reduction division in which the number of chromosomes per cell is cut in half through the separation.
Unit 3- Genetics Meiosis. Fertilization Zygote 46 chromosomes Egg ____ chromosomes Sperm _____ chromosomes X Which is diploid ? Which is haploid ?
End Show Slide 1 of 38 Copyright Pearson Prentice Hall 10-2 Cell Division.
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