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.

DISCLAIMER: Since you have asked multipart questions I will answer only three of them .…

Conclusions: 1. Define crossing over and explain when it occurs. 2. Compare any differences in the appearance of genes on chromosomes in gamete cells when crossing over occurs and when it does not occur.

Conclusions: 1. Define crossing over and explain when it occurs. 2. Compare any differences in the appearance of genes on chromosomes in gamete cells when crossing over occurs and when it does not occur.

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter11: Meiosis: The Cellular Basis Of Sexual Reproduction

Section: Chapter Questions

Problem 12TYK: Discuss Concepts One of the human chromosome pairs carries a gene that influences eye color. In an...

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At the end of Meiosis II in human cells (specifically in males, for example), how many gametes are made from one original parent cell, how many chromosomes are in each gamete, and what is each chromosome made of (that is, if you compared, say, chromosome #1 in a gamete with the two #1 chromosomes the person inherited from his parents)?
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6. Consider your btoehr and your son. a. If you are female, will your brother and your son have essentially identically Y chromosomes? Explain your answer. b. If you are male, will your brother and your son have essentially identical Y chromosomes? Explan your answer.
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Meiosis DrawingIn this assignment you will track and draw the chromosomes of a diploid organism through all the stages of meiosis. Make sure you label the alleles for genes on the chromosomes the whole way through - every chromatid should have labeled alleles. For meiosis, both crossing over and independent assortment can occur. For the purpose of this exercise, assume that there is a single crossover event on the long chromosome between the A and D genes. Only show crossing over after its fully occured. There are no crossover events on the short chromosome. Regarding independent assortment, there are two possible outcomes in meiosis if there are two homologous pairs of chromsomes. Include both independent assortment possibilities - one on the left side and one on the right. Fill in the possible gamete genotypes for each outcome. If you do this correctly you should end up with 8 different types of gametes. Image attached for genotypes and alleles. Give me a full explaination of each of…
Meiosis DrawingIn this assignment you will track and draw the chromosomes of a diploid organism through all the stages of meiosis. Make sure you label the alleles for genes on the chromosomes the whole way through - every chromatid should have labeled alleles. For meiosis, both crossing over and independent assortment can occur. For the purpose of this exercise, assume that there is a single crossover event on the long chromosome between the A and D genes. Only show crossing over after its fully occured. There are no crossover events on the short chromosome. Regarding independent assortment, there are two possible outcomes in meiosis if there are two homologous pairs of chromsomes. Include both independent assortment possibilities - one on the left side and one on the right. Fill in the possible gamete genotypes for each outcome. If you do this correctly you should end up with 8 different types of gametes.