Bio 111 Lecture 7 Homework Mitosis

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Comic San.. BIUA ===|三 Normal text 12 II1 3 CP Unit 6 Review: Meiosis Page 1. What type of cell undergoes meiosis? Gamete cells Somațic cells or 2. What are homologous chromosomes? 3. For each of the following state if the cell is haploid or diploid. Sperm cell = Liver cell = Egg cell = Stomach cell = 4. If the diploid number in a liver cell is 52, how many chromosomes are there in the egg of this organism? 5. During meiosis, the chromosome number: a) is doubled becomes diploid b) is reduced c) remains the same d) 6. Cells starting mitosis & meiosis begin with a (haploid or diploid) set of chromosomes. 7. How many times do cells divide during meiosis? 8. What are the stages of meiosis called? Meiosis I: II lılı

Wire Models for Cell Division 1. Mitosis Label the chromosomes at metaphase. Identify the types of chromosomes in the genome. Give the chromosome number (in proper format) and chromosome composition of the cell.

Need help with three question. Multiple choise. 1.) How is the outcome of meiosis different from the outcome of mitosis? a.) The daughter cells produced in mitosis are genetically different from the parent cells, but have the same number of chromosomes, while these are genetically similar in case of meiosis and have fewer chromosomes. b.) The daughter cells produced in mitosis are genetically similar to the parent cells and have the same number of chromosomes, while these are genetically different in meiosis and have half the number of chromosomes. c.) The daughter cells produced in both cases are genetically similar to the parent cells, but in meiosis, there are fewer chromosomes. d.) The daughter cells produced in both cases are genetically different, but in mitosis, there are fewwer chromosomes in daughter cells. 2.) What would be the effect on the number of chromosomes in gametes due to non-disjunction? a.) The chromosome number of the gametes remains the same as the parent…

Need Help? My Courses My courses > ELGINBIO108S21 | Section 701 > Cell Division: Mitosis & Meiosis > Lab Quiz: Cell Division: Mitosis 13 It will be difficult to observe individual chromosomes during interphase because answered ut of 1,00 Select one: A. The DNA has not been replicated yet Rlag B. The chromosomes are in their uncondensed/unwound form C. The chromosomes leave the nucleus and are dispersed within the cytoplasm D. The spindle must move the chromosomes to the metaphase plate before they are visible E. You can never observe an individual chromosome due to their small size revious page Next page

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B-Meiosis 1. Using the same set of wires, pair the homologous chromosomes. What stage is this? 1.a. Assume crossing-over between non-sister chromatids (use the long green wire with a red segment at the tip and the long red wire with a green segment at the tip). What stage is this? 1.b. Draw and label the chromosomes showing the interchanged segments. Chromosome number Chromosome composition L Stage 1.c. What is the significance of crossing over? 2. Draw and label the chromosome at metaphase I. Metaphase I Chromosome number Chromosome composition 2.a. How is this stage different from metaphase of mitosis?

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2 rounds of division 36. How many divisions occur during meiosis? Is this the same as mitosis? 37. The original cell in meiosis is short-hand for this term is 2N or 2n. 38. How many daughter cells are produced by meiosis? 39. The daughter cells after meiosis are homologous pairs. 1 with chromosomes in homologous pairs. The with in chromosomes. There are 40. Compare and contrast oogenesis and spermatogenesis by filling out this table. Making sperm is called: Spermatogensis Making an egg is called: oogensis formed in a human gonad called a and is The parent cell is called a formed in a human gonad called an and is The parent cell is called a 介 sperm polar bodies that get reabsorbed egg (ovum) Describe the difference in meiosis when a human egg and sperm are made: 41. If a diploid cell containing 28 chromosomes undergoes meiosis, how many chromosomes wil daughter cell have? 42. Describe two ways to meiosis creates diversity in gametes: (1) (2)

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Write True or False 1. In prophase of mitosis the chromosomes condense in y sharp structure that can be easily seen under microscope 2. In interphase stage of mitosis a membrane forms around each set of chromosomes to create two new nuclei 3. In interphase l of meiosis, the paired chromosomes line up 4. In prophase ll of meiosis, it is visibly obvious that replication has not occurred 5. In telophase l of meiosis, the cell pinches and divides 6. Homologous chromosomes contain the unmatched alleles donated from mother and father 7. In anaphase of mitosis, the sister chromatids are pulled apart by the mitotic spindle which pulls one chromatid to one pole and the chromatid opposite pole 8.At the end of the prophase in mitosis, the membrane around the nucleus in the cell dissolves away releasing the chromosomes. 9.During interphase in mitosis, microtubules extend from centrosomes. 10.If not corrected in time, mistakes made during mitosis can result changes in DNA but will not lead to…

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MITOSIS AND MEIOSIS COMPARISON TABLE Basis of Comparison 1. Type of Cell where the Mitosis Meiosis process occurs | 2. Number of cell divisions 3. Number of chromosomes in parent cell and daughter cell 4. Needed Checkpoints 5. Stages/ Phases 6. Final product 7. Example

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