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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- During which phases of the mitotic cycle would the terms chromosome and chromatid refer to identical structures?arrow_forwardCompare meiotic anaphase I with meiotic anaphase II. Which meiotic anaphase is most similar to the mitotic anaphase?arrow_forwardA cell from a human female has just undergone mitosis. For unknown reasons, the centromere of chromosome 7 failed to divide. Describe the chromosomal contents of the daughter cells.arrow_forward
- The chromosome constitution number of this individual is 2=6. This drawing represents: a. mitotic metaphase. b. meiotic metaphase I. c. meiotic metaphase II. d. a gamete. e. sixnonhomologous chromosomes.arrow_forwardAssume that a meiotic-nondisjunction event causes trisomy 8 in a newborn. If two of the three copies of chromosome 8 are absolutely identical, at what point during meiosis did the nondisjunction event take place?arrow_forwardA cell in prophase 2 of meiosis has 12 chromosomes. Given this information, answer the following questions. how many chromosomes are present in the cell during prophase 1 of mitosis? And, how many chromosomes are present during prophase 1 of meiosis?arrow_forward
- A sperm cell from the fruit fly Drosophila melanogaster contains four chromosomes. How many chromosomes would be present in a spermatogonial cell about to enter meiosis? How many chromatids would be present in a spermatogo- nial cell at metaphase I of meiosis? How many would be present at metaphase II?arrow_forwardIf a cell has a diploid number of 12 chromosomes before meiosis I and meiosis II, how many chromosomes will be in each of the four daughter cells if one pair of chromatids experiences second-division nondisjunction during meiosis II. Explain your answer.arrow_forwardThe horse has a diploid set of 64 chromosomes, and a donkey has a diploid set of 62 chromosomes. Mules (viable but usually sterile) are produced when a male donkey is mated to a female horse. How many different chromosomes will a mule somatic (body) cell contain? Explain your answer.arrow_forward
- A micrograph of a mutated dividing cell from a zebrafish showed 19 chromosomes, each consisting of two sister chromatids. Which of the following stages of cell division would you expect such micrograph have been taken? a. prophase I of meiosis b. telophase II of mitosis c. prophase of mitosis d. prophase II of meiosisarrow_forwardIf a cell has a diploid number of twelve (2N = 12) before meiosis, how many chromosomes will be in each of the four daughter cells if one pair of chromosomes experiences nondisjunction during meiosis I. Explain.arrow_forwardA cell containing 40 chromatids at the beginning of meiosis would at its completion produce cells containing how many chromosomes?arrow_forward
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