just need number 2, 3 and 4 please No Crossing OverCrossing OverAppearance of Gamete CellsAppearance of Gamete CellsConclusions:1. Define crossing over and explain when it occurs.2. Compare any differences in the appearance of genes on chromosomes in gamete cellswhen crossing over occurs and when it does not occur.3. Crossing over has been compared to "shuffling the deck" in cards, Explain what thismeans,4. What would be accorExplain your answer.mplished if crossing over occurred between sister chromatids? Problem: How does crossing over affect the genes passed down to the daughter cells?Experiment:Materials:Modeling clay (or spaghetti noodles, or pipe cleaners, or something similar)2 twist tiesProcedure:1. Roll out four long strands of clay at least 10 cmlong to represent two chromosomes, each withtwo chromatids.2. Use the figure to the right as a guide in joiningand labeling these model chromatids. Althoughthere are four chromatids, assume that theystarted out as a single pair of homologouschromosomes prior to replication. The figureshows tetrad formation during prophase I of2 Chromosomes with chromatidsTwist tieMark geneswith a pencilpointmeiosis.3. First, assume that no crossing over takes place.Model the appearance of the four gamete cellsthat will result at the end of meiosis. Recordyour model's appearance by drawing the gametes'chromosomes and their genes in the data tablebelow.Nonsister chromatids4. Next, repeat steps 1-3, however, assume thatcrossing over occurs between genes B and C. Seethe picture at the right as an example.

There are two types of cell division i.e mitosis and meiosis.

2. Compare any differences in the appearance of genes on chromosomes in gamete cells when crossing over occurs and when it does not occur. 3, Crossing over has been compared to "shuffling the deck" in cards. Explain what this means, 4. What would be accomplished if crossing over occurred between sister chromatids? Explain your answer.

2. Compare any differences in the appearance of genes on chromosomes in gamete cells when crossing over occurs and when it does not occur. 3, Crossing over has been compared to "shuffling the deck" in cards. Explain what this means, 4. What would be accomplished if crossing over occurred between sister chromatids? Explain your answer.

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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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
10:10 E ← sisAndMeiosis.docx FREE EDIT PDF FREE CONVERT PDF TO WORD 2. Why are chromosomes important? 3. How are meiosis I and meiosis II different? 1. What is the state of DNA at the end of meiosis I? What about at the end of meiosis II? 4. Why do you use non-sister chromatids to demonstrate crossing over? 7. Identify two ways that meiosis contributes to genetic recombination. 10. P FREE PDF FILLER 5. What combination of alleles could result from a crossover between BD and bd chromosomes? 8. Why is it necessary to reduce the number of chromosomes in gametes? 6. How many nuclei are present at the end of meiosis II? How many chromosomes are in each? a. Sperm Cell b. Egg Cell AP_5 c. Daughter Cell from Mitosis ON 5G I 9. Blue whales have 44 chromosomes in every cell. Determine how many chromosomes you would expect to find in the following: d. Daughter Cell from Meiosis II COUS ra PAGE 10... FREE CONVERT JPG TO PDF X OeScience Labs, 2016
Q1. a. Manually, using a pencil, draw a cell in anaphase II from an organism in which 2n = 2 and each chromosome is metacentric. b. Given that each G1 nucleus from this organism contains 16 picograms of DNA, how many picograms of chromosomal DNA would you expect in the cell shown here?
z e 50 μm Figure 3. Grasshopper testis with differential staining and viewed under a microscope. Encircle the cell and label the specific stage in the meiosis it displays. Identify as many as you can witha minimum of two cells representing different stages. Make sure to specify whether the stage belongs to meiosis I or II. If you identify a cell at prophase I, then specify the substage.
Can you guys complete this diagram for me? The instructions are “To draw the chromosomes when appropriate and separate the chromosome pairs or the chromatids at the correct stages. The two long chromosomes are a homologous pair and the two short chromosomes are a homologous pair (the thickness of the line indicates which parent the chromosomes cane from-thin for mom and thick for dad. Note that you have only one of each thickness with each homologous pair. Feel free to use a color scheme instead of thickness as you draw, but you need to keep one long and one short chromosome the same color and the second long and short chromosomes a second color so that crossing over can be visualized easily.”
The centromere Group of answer choices A is a group of proteins that attach to the kinetochore. B is not present on the chromosomes of the daughter cells until anaphase. C is a region of DNA where sister chromatids associate with one another and where the kinetochore forms D is a group of proteins that attach to the mitotic spindle. E is a region of DNA where sister chromatids associate with one another
● ● Illustrate the chromosome changes in interphase and mitosis using a diploid cell that is 2n=4 (two large and two small chromosomes). Label the circles as G1 and G2 stages of interphase and each phase of mitosis (in order). Draw the chromosome in each circle using the following guidelines. 1) For unreplicated chromosome draw a line (/) and for replicated chromosome draw an X. 2) For simplicity, do not indicate that the chromosomes are decondensed chromatin during interphase. 3) Skip drawing the nuclear membrane or spindle fibers, since we are focusing on the chromosomes. Label genes in the resulting daughter cells as A/a and B/b. (These letters represent genes which are at particular places along the DNA molecule. Each chromosomes can have a thousand genes but we are focusing on these two.) Ask me Qs in class if anythign on this is not clear.
Picture name - Tradescantia spathacea meiotic cell. HPO (400x)Shown below are photomicrographs of Rhoeo tradescantia cells undergoing meiosis. Answer the following question for each of the photomicrographs: Identify the cytogenetic abnormality observed (ex. ring, chain, laggard, bridge). Identify the meiotic stage in which these aberrations are observed (as shown in the photomicrograph). Explain how these aberrations are formed and relate to the possible causal mutation(s). Will this result to sterile and/or fertile gametes? Explain.
If you are experimenting on a haploid cell with DNA that is equal to 5. What is the amount of DNA during Telophase 2?
Z File Arial Home 12 8 Type here to search Insert S W X Draw B I U ab 13 #3 3 LLJ Layout E C Review f4 D S X₂ R View O E LL x² 15 Task 6 V AAEEEE A) (1) What types of cells are produced by meiosis and mitosis? C 5 (DJ ACTUAL (c) Why is the curve at A - B steeper than the THEORETICAL line? de in (ii) Explain the significance of the difference in the number of chromosomes. (i) What are the possible uses of the cells produced from mitosis and meiosis? f6 D T G The Cell Assignmen: 22.23 - Saved 6 B 17 Y H W & 7 18 hp 7 N U 19 0 8 4 u M 10 9 Heading 1 15 K ä (A.C.2.3) F11 Heading 2 112 Mahammac Zawia Normal 9 C 7°C Mostly cloudy ^940) scroll diam 19 pause brick Share 12:00 AM 11/24/2022 insert backspace I Ę₂
Focus on drawing the cell nucleus taking care to model the number and location of chromosomes. Although the chromosomes are only visible in each stage, draw them in all stages for clarity sake. (There needs to be a model drawing) What would a 2n=10 cell look like during prophase I? What would that cell look like during metaphase I? At the end of meiosis I? During metaphase II? At the end of meiosis II?
Please mathc the following So I can understand it _ monosomy trisomy anuploidy centromere _ gene sister chromatids _ diploid ___ Haploid _ (2) tetrad __ (11) telomere __ Chromosomes _ Chromatin _ allele 1. A duplicated chromosome is made of 2. A maternal and paternal chromosome present together, each with two sister chromatids 3. Semi-condensed DNA made up of coiled nucleosomes. 4. Super-coiled DNA strands. 5. Contains only one copy of each chromosome. 6. Name of an error during meiosis resulting in fewer chromosomes than normal in a zygote or individual (2n-1) 7. General term for an error resulting in the incorrect number of chromosomes in a gamete after meiosis 8. A specific version of a gene, such as blue eye colour 9. A region on a chromosome that codes for a protein 10. Region where…