1. Somatic cells in the rat kangaroo, Potorous tridactylis, are 2n 12. You are s
ID: 199416 • Letter: 1
Question
1. Somatic cells in the rat kangaroo, Potorous tridactylis, are 2n 12. You are studying mitosis and meiosis in cells from this organism. a. How many chromosomes and DNA molecules will be present in a gamete (egg or sperm) from this organism? b. For the following stages state how many chromosomes and DNA molecules are present (answers are per cell). Stageofthe cell cycle G1 of interphase Anaphase of mitosis Metaphase l Prophase II chromosomes- #DNAMolecules 1 2 12 12 12 c. In the circle below draw the cell as it would appear during Metaphase L. In the drawing make each homologous pair a different size and shape than the other chromosomes. Shade in the maternal chromosomes and leave the paternally inherited chromosomes unshaded. Draw a box around one homologous pair of chromosomes. Include the spindle apparatus in your picture and label one kinetochore. d. For the cell in Metaphase I, is the cell haploid or diploid? diploi For the cell in Metaphase I, what is the term that describes the two homologous chromosomes coming together to form the e. What is the name of the process that occurs during Metaphase I and creates genetic diversity? f.Explanation / Answer
Q1(a)- Gamates will carry n=6 no. of chromosome since gametes are haploid in nature hence they contain half the total no. of chromosome present in diploid cells.
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