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Lord of the Cell Rings and the Division of Middle Cell
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Journey 1 : Fellowship of the Cell Ring
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What is the longest phase of the cell cycle?
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Interphase
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What is #1?
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G1
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What is #2?
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s
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What is #3?
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G2
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What is #4?
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Mitosis
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What is #5?
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Prophase
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What is #6?
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Metaphase
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What is #7?
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Anaphase
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What is #8?
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Telophase
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What is #9?
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Interphase
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What happens in #1?
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Growth and performs normal metabolic activities
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What happens in #2?
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DNA is Replicated
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What happens in #3?
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Growth and prepares for mitosis
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Journey 2: The Two Towers: Mitosis and Meiosis
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Meiosis occurs in what type of organs?
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Reproductive organs
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What other cells besides the egg cell are made during female meiosis?
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Polar Bodies
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Bacteria divide by what process/processes?
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Binary Fission and Mitosis
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What is unequally divided between the new cells of the female meiosis?
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Cytoplasm
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What guides chromatids in the moving process?
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Spindle Fibers
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What is the longest phase of mitosis?
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Prophase
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In meiosis, animals make _______ and plants make _______
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Animals = gametes Plants = spores
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Genetic recombination is the formation of new combinations of _____________
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DNA / Chromosomes
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The production of sperm is called __________________ and the production of eggs is called _________________
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Spermatogenesis Oogenesis
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Body cells are called ___________________ cells. These cells undergo the cellular division called __________________. Sex cells are called _________________. These cells are produced by the cellular division called ___________________.
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Somatic Mitosis Gametes Meiosis
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What two unique events occur in meiosis and explain them?
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Crossing Over – Chromosomes pair up and arm segments get tangled and break from original chromosome. The arms then bond with the other chromosome. Skipping Replication – Only 1 DNA replication but 2 divisions. Chromosomes half in number as a result.
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What are 3 things that happen in prophase?
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Prophase Nuclear envelop dissolves Nucleolus dissolves Chromosomes condense Centrioles move to the poles Spindle fibers develop from the centrioles
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Draw the difference between meiosis of the sperm and meiosis of the egg.
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List the differences between the Two Divisions MitosisMeiosis 1. 2. 3. 4. 4.
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MitosisMeiosis 1. Goes through PMAT once 1. Goes through PMAT Twice 2. Ends with 2 Diploid cells identical to parent 2. Ends with 4 Haploid cells different from the parent 3. Somatic cells undergo this process 3. Gametes are produced by this process 4. No crossing over or skipping of replication 4. Crossing over and skipping replication occurs
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Is Meiosis a part of the cell cycle? Yes or No Explain why meiosis is or is not a part of a cycle in detail. (Must include what happens to the cells)
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No, because meiosis ends with 4 haploid gametes that will either fertilize or DIE
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Identify the Phase
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Telophase
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Identify the Phase
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Prophase
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Identify the Phase
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Anaphase
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Identify the Phase
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Metaphase
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Identify the Phase
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Anaphase
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Identify the Phase
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Prophase
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Identify the Phase
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Interphase
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Identify the Phase
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Metaphase
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Journey 3: The Return of the DNA King
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True/False Prokaryotes have 1 chromosome which is in the form of a circle.
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true
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True/False Eukaryotes are more complex than Prokaryotes.
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true
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True/False True/False The haploid number of chromosomes must be even, but the diploid number can be odd or even.
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False: The diploid number must be even where the haploid can be even or odd
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A long, thin molecule that stores genetic information?
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Chromosomes - DNA
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Two copies of the same chromosomes are called?
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Homologues or Homologous Chromosomes
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Humans have 46 chromosomes in all cells except sperm and egg cells. How many of these chromosomes are autosomes?
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44
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Between cell divisions, the DNA in a eukaryotic cell is uncoiled and spread out; in this form it is called...
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Chromatin
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The constricted area of a homologue connecting the 2 chromatids is called a
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Centromere
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At the end of every side of a homologue there is a similar DNA sequence that is called the
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Telomere
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A protein that DNA wraps tightly around which gives a chromosome its shape.
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Histone
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A visual representation of the organized form of the chromosomes in an organism.
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Karyotype
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What are the 2 types of chromosomes?
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Sex Chromosomes and Autosomes
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What is the Gender of a person with this karyotype?
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Female
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Coyote 2n = 78 Rice n = 12.5 Carp n = 52 Dolphin n = 22 DiploidHaploidOrganism 44 39 104 25 DiploidHaploidOrganism 44 39 104 25 DiploidHaploidOrganism 44 39 104 25
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DiploidHaploidOrganism 4422 Dolphin 7839Coyote 104 52Carp 2512.5 Not Possible
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