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- A. 1. Division of the cell nucleus, results in two daughter nuclei, each have the same number of chromosomes as the parent nucleus. 2. One two identical halves of a duplicated chromosome. 3. Fusion of haploid (n) gametes; results in the formation of a diploid (2)n zygote. 4. The breaking and rejoining of homologous (non sister) chromatids during early meiotic prophase I, resulting in an exchange of genetic material. 5. The diploid (2n) cell that results from the union of haploid (n) gametes in sexual reproduction. 6. The condition of having one set of chromosomes per nucleus. 7. The complex of DNA, proteins and some RNA that makes up eukaryotic chromosomes. 8. Structures in the cell nucleus, composed of chromatin and containing the genes. 9. An X-shaped site in a tetrad marking the location where homologous chromatids previously underwent crossing over. 10. A sex cell; in plants and animals, an egg or sperm. 11. Type of reproduction in which two gametes (usually, but not necessarily,…1)Discusses why Meiosis I is referred to as reduction division and why Meiosis II is essentially like Mitosis. 2)Discusses where problems are likely to occur in Meiosis and what these problems could lead to.a. What type of cell division mitosis, meiosis I or meiosis II is shown in this figure? b. What is the diploid number of this organism? c. Provide labels for (i) and (ii)
- Draw the daugher cells (only the daughter cells, not the process) for each situation below & be sure to include whether the cells are diploid or haploid, number of chromosomes and chromatids for each one. cell has a diploid number of 12 (2n=12) a) daughter cells after mitosis b) daughter cell after meiosis I b) daughter cell after meiosis IIGenetic problems: Use the diagram below to figure out how each monosomy or trisomy can a) Normal X chromosome segregation b) Nondisjunction in meiosis I c) Nondisjunction in meiosis II Diploid cell at start of meiosis First meiotic division Nondisjunction Second meiotic division Nondisjunction 00 00 develop. Benjamim XCuinmi х Х х х Xх хх о о XX O 2. A color-blind man married a normal woman. Their daughter, who was phenotypically normal, married a normal man and the couple produced three children, a normal boy, a color-blind boy, and a color-blind girl. Further examination indicates that this girl has two X chromosomes. Explain the origin of the color- blind girl.16. Which of the following statements describes a major difference between mitosis and meiosis I in a diploid organism? A) Sister chromatids separate in mitosis, while homologous pairs of chromosomes separate in meiosis I. B) Sister chromatids separate in mitosis, while homologous pairs of chromosomes separate in meiosis II. C) DNA replication takes place prior to mitosis, but not before meiosis I. D) Only meiosis I results in daughter cells that contain identical genetic information. 17. Which of the following events happens at the conclusion of meiosis I? A) Homologous chromosomes of a pair are separated from each other. B) The chromosome number per cell remains the same. C) Sister chromatids are separated. D) Four daughter cells are formed. 18. Refer to the drawings in the figure below of a single pair of homologous chromosomes as they might appear during various stages of either mitosis or meiosis, and answer the following question. Which diagram represents anaphase I of meiosis?…
- Identify the stages of meiosis described by the following meiotic events/conditions/terms. Write prophase I, metaphase I, anaphase I, telophase I, prophase II, metaphase II, anaphase II, or telophase II. In case the events are found in both stages, write the stages both. 1. Formation of chiasma 2. Each chromatid is considered as full-fledged chromosome. 3. Chromosomes begin to pair off. 4. Spindle microtubules start to attach to the centromere. 5. Tetrads are aligned at the middle of the cell. 6. The sister chromatids separate. 7. Produce 2 haploid daughter cells. 8. The chromosomes line up at the middle of the cell. 9. The sister chromatids move together to the opposite poles. 10. The chromatids reach the poles. 11. The chromosomes in each daughter cell are still duplicated.12. Spindle microtubules attach in the centromere of each haploid daughter cell. 13.3) The small beads (pink and blue) on the chomatids represent the segments of DNA that have been swapped between non-sister chromatids within a tetrad. What is the term for this exchange of genetic information that occurs in prophase 1? MEIOSIS I. Cytoplasm Nuclear membrane Nucleus Prophase IAll of the following could be deduced from the table except CRITERIA MITOSIS MEIOSIS 1. No. of nuclear division 2. Synapsis/crossing over 3. Centromere of sister chromatids at anaphase 4 No. of daughter cells 5. No. of chromosomes per daughter cell 6 Function I. The mother cell in mitosis divides only once, while the mother cell in meiosis divides twice. II. Synapses only takes place in meiosis. III. Centromere of sister chromatids at anaphase separate in both mitosis and meiosis. The number of daughter cells in mitosis is 2, while meiosis is 4. V. Mitosis is haploid, meiosis is diploid. A. I, II, and III B. I, III, IV and V C. I, Il and IV D. I. II. II. V IV, • If you were asked to cormplete the table with the correct answer, which of the following table would you chose? А. CHITERIA MITOSIS MEIOSIS 1. No. of nuciear dimaion Synapais/cossing ove 3. Centromere of NIuzer chromatids atanaphase No. of daaghter cells PTESEnt MI-anached separates Present separates Haploid 5. No of…
- а. Indicate where independent assortment takes place. b. Label when the cell(s) are diploid or haploid. с. Indicate the number of chromosomes in each cell. d. Label Interphase, Prophase I, Metaphase I, Anaphase I, Telophase I, Meiosis I, and Meiosis II.The following pairs of term differentiate mitosis from meiosis. Describe the pair of terms briefly. 1. Somatic cells vs. sex cells 2. Haploid cells vs. Diploid cells 3. Homologous chromosomes vs. Sister chromatids 4. Daughter cells vs. 2 daughter cells 5. 2n = 6 vs n = 3. If you were asked to complete the table with the correct answer, which of the following table would you chose? А. CHITERIA MITOSIS MEIOSIS 1. Na. of nuciear dimsion 2. Syriapaia/crossing over ECentromere of suster chromatids atanaphase Preseut separates Fresent M-attached/M-separates Haploid S. Na of chromosomes per daughter cell 6 Function Diplaid Growth. Rapair Growth. Repair and Reproduction B. CRITERIA MITOSIS MEIOSIS TNo, af nuclear darinion Synapsin/croing over 3. Centromere af sister chromatids at anaphase Absetit sepiarates Fresent -attached FNo. of daughter cells 5. No. of chromosomes per daughter cell 6 Function Diploid Haploid Growth, Eapair Growth, Repair and Reproduction C. CRITERIA MITOSIS MEIOSIS 1. No. of muclear division 2. Synapsis/crossing over 3. Centromereof sister chromatids at anaphane 4 Na, af daughter cells 5. No. of chromosoetes per daughter cell 6 Punction Absent Present separates MI-attached/Mli-separates Haploid Diploid Gruwth, Repair Reproduction D.…