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1. alleles on homologs and sister chromatids. A is on the big chromosome and B is on the smaller chromosome. The genotype is AaBb. Using a vertical metaphase plate, draw the two independent orientations of this AaBb cell in Metaphase I of MEIOSIS. There are two pairs of chromosomes in a diploid cell (2n=4). Label the genes and OR GAMETES:

1. alleles on homologs and sister chromatids. A is on the big chromosome and B is on the smaller chromosome. The genotype is AaBb. Using a vertical metaphase plate, draw the two independent orientations of this AaBb cell in Metaphase I of MEIOSIS. There are two pairs of chromosomes in a diploid cell (2n=4). Label the genes and OR GAMETES:

Human Anatomy & Physiology (11th Edition)
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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**Title: Understanding Chromosome Orientation in Meiosis** --- **Exercise: Chromosomal Arrangement in Metaphase I of Meiosis** **Objective:** To understand the two independent orientations of chromosomes during Metaphase I in meiosis for a diploid cell with the genotype AaBb. **Instructions:** 1. **Chromosomal Details:** - The diploid cell has a total of two pairs of chromosomes (2n=4). - Gene **A** is located on the larger chromosome, and gene **B** is on the smaller chromosome. 2. **Task:** - Illustrate and label the genes and alleles (A/a and B/b) on homologs and sister chromatids. - Use a vertical metaphase plate to demonstrate the two possible orientations of these chromosomes during Metaphase I. 3. **Diagrams:** **Diagram Description:** - Two circles represent the potential orientations of the chromosomes. - Each circle corresponds to a different arrangement of the homologous chromosome pairs on the metaphase plate. 4. **Gametes:** - Indicate the potential gamete combinations that could result from each orientation. **Geometry of Orientation:** - The arrangement of chromosomes will determine the genetic variability of the gametes. **Gametes Labeling:** - Leave spaces to fill in the predicted gametes for each orientation scenario. The two diagrams should be labeled as follows: - **Left Diagram:** - Possible gamete combinations based on one orientation. - **Right Diagram:** - Possible alternative gamete combinations based on the second orientation. --- By completing this exercise, students will gain a clearer understanding of how independent assortment during meiosis contributes to genetic diversity.
Transcribed Image Text:**Title: Understanding Chromosome Orientation in Meiosis** --- **Exercise: Chromosomal Arrangement in Metaphase I of Meiosis** **Objective:** To understand the two independent orientations of chromosomes during Metaphase I in meiosis for a diploid cell with the genotype AaBb. **Instructions:** 1. **Chromosomal Details:** - The diploid cell has a total of two pairs of chromosomes (2n=4). - Gene **A** is located on the larger chromosome, and gene **B** is on the smaller chromosome. 2. **Task:** - Illustrate and label the genes and alleles (A/a and B/b) on homologs and sister chromatids. - Use a vertical metaphase plate to demonstrate the two possible orientations of these chromosomes during Metaphase I. 3. **Diagrams:** **Diagram Description:** - Two circles represent the potential orientations of the chromosomes. - Each circle corresponds to a different arrangement of the homologous chromosome pairs on the metaphase plate. 4. **Gametes:** - Indicate the potential gamete combinations that could result from each orientation. **Geometry of Orientation:** - The arrangement of chromosomes will determine the genetic variability of the gametes. **Gametes Labeling:** - Leave spaces to fill in the predicted gametes for each orientation scenario. The two diagrams should be labeled as follows: - **Left Diagram:** - Possible gamete combinations based on one orientation. - **Right Diagram:** - Possible alternative gamete combinations based on the second orientation. --- By completing this exercise, students will gain a clearer understanding of how independent assortment during meiosis contributes to genetic diversity.
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