Campbell Essential Biology (7th Edition)
7th Edition
ISBN: 9780134765037
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 8, Problem 8SQ
A micrograph of a dividing cell from a mouse shows 19 chromosomes, each consisting of two sister chromatids. During which stage of meiosis could this micrograph have been taken? (Explain your answer.)
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Chapter 8 Solutions
Campbell Essential Biology (7th Edition)
Ch. 8 - Which of the following is not a function of...Ch. 8 - In what sense are the daughter cells produced by...Ch. 8 - Why is it hard to observe individual chromosomes...Ch. 8 - A biochemist measures the amount of DNA in cells...Ch. 8 - What phases of mitosis are opposite in terms of...Ch. 8 - Complete the following table to compare mitosis...Ch. 8 - If an intestinal cell in a dog contains 78...Ch. 8 - A micrograph of a dividing cell from a mouse shows...Ch. 8 - Prob. 9SQCh. 8 - Prob. 10SQ
Ch. 8 - Although nondisjunction is a random event, there...Ch. 8 - Prob. 12IMTCh. 8 - Prob. 13IMTCh. 8 - For each statement, identify which major theme is...Ch. 8 - A mule is the offspring of a horse and a donkey. A...Ch. 8 - You prepare a slide with a thin slice of an onion...Ch. 8 - Interpreting Data The graph shows the incidence of...Ch. 8 - If an endangered species can reproduce by...Ch. 8 - Every year, about a million Americans are...Ch. 8 - The practice of buying and selling gametes,...Ch. 8 - Prob. 21BS
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- Human Somatic (non reproductive) cells have 46 chromosomes organized into 23 pairs. A human somatic cell goes into mieosis, how many chromosomes does each resultant daughter cell have?arrow_forwardHuman cells normally have 46 chromosomes. For each of the following stages, state the number of chromosomes present in a human cell: 1. Metaphase of mitosis 2. Metaphase I of meiosis 3. Telophase of mitosis 4. Telophase I of meiosis Telophase II of meiosisarrow_forwardA diploid cell has 15 picograms of DNA in G₁ phase. If this cell is a germ line cell that undergoes meiosis, how much DNA will each daughter cell contain at the end of meiosis I? How much DNA will each daughter cell contain at the end of meiosis II? MI = 30 pg: MII = 15 pg O MI = 15 pg; MII = 15 pg MI = 7.5 pg; MII = 15 pg O MI = 15 pg: MII = 7.5 pgarrow_forward
- Human somatic cells have 46 chromosomes. How many chromosomes are present in human cells undergoing each of the following phases of meiosis? Interphase - Answer: 0 2 3 4 6 9 2 Prophase I - Answer: 0 2 3 4 6 9 2 Prophase II - Answer: 0 2 3 4 6 9 2 Telophase I - Answer: 0 2 3 4 6 9 2 Telophase II - Answer: 0 2 3 4 6 9 2arrow_forwardConsider a diploid organism in which the somatic cell chromosome number is 42. Assume cytokinesis to occur in mid telophase. A. How many chromosomes at the close of telophase of mitosis? B. How many chromosomes are expected at metaphase II of meiosis?arrow_forwardWhat are the major differences between mitosis and meiosis? Explain this both in terms of the different steps of each event and with regards to the final products of each event. Remember to mention the events which are unique to meiosis and why they are significant.arrow_forward
- Shown are three alignments of reciprocal translocation chromosomes in cells about to undergo meiosis. Match the daughter cells that will result after meiosisarrow_forwardFor this question use the following symbols for duplicated chromosomes X, Y, and 1, and draw the chromosomes from a human male as a cell goes through the divisions described below. = X = Y = 1 a. Mitosis, showing (i) the starting cell (after S phase) and (ii) the cell(s) after mitosis. b. Meiosis with a nondisjunction of the Y chromosome in meiosis II, following only those three types of chromosomes: (i) the starting cell (after S phase) and (ii) the celI(s) after meiosis I and (iii) the cell(s) after meiosis II. **label each chromosomarrow_forwardEvery somatic cell in a human contains 23 pairs of chromosomes. Pairs 1 to 22 are autosomes, while pair 23 are the sex chromosomes. The pairs are described as homologous chromosomes. Answer the following questions about homologous chromosomes: Where do the chromosomes that make up each pair come from? Explain how the terms homologous chromosomes and sister chromatids are different. In genetic males, there is one pair that is not homologous. Identify the pair and explain why.arrow_forward
- An organism has 34 chromosomes in a somatic cell. How many chromosomes will be in each cell after Meiosis I? After Meiosis II?arrow_forwardIf a diploid organism has 14 chromosomes (2n=14) a. How many chromosomes will its gametes have? b. After meiosis I during gamete formation, how many chromosomes are in each daughter cell? c. After meiosis I during gamete formation, how many chromatids are in each daughter cell?arrow_forwardA simple diagram indicating the alterations in genetic content throughout mitosis is shown in the attached picture. Please prepare a similar diagram for meiosis, starting with a diploid cell in G1 (like the picture). Include all of the cells generated at each stage.arrow_forward
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