Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 11, Problem 3RQ
What structure is most important in forming the tetrads?
- centromere
- synaptonemal complex
- chiasma
- kinetochore
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What is the chromosome number of the parent and daughter cell in the photo?
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chromosome configuration: 11 I|
Centrioles at opposite end of cell
Spindle fibres attached to centromeres
46 double stranded chromosomes lined up along the metaphase plate
Diploid cell
2n =
ANAPHASE
Centrioles at opposite poles
Spindle fibres attaches to centromeres of the single stranded chromosomes
46 chromosomes get separated - 46 chromatids get pulled to each pole by spindle fibres
Diploid cell
2n =
Chapter 11 Solutions
Biology 2e
Ch. 11 - Figure 11.9 If a mutation occurs so that a fungus...Ch. 11 - Meiosis usually produces___daughter___ cells. two...Ch. 11 - What structure is most important in forming the...Ch. 11 - At which stage of meiosis are sister chromatids...Ch. 11 - At metaphase I, homologous chromosomes are...Ch. 11 - Which of the following is not true in regard to...Ch. 11 - What phase of mitotic interphase is missing from...Ch. 11 - The part of meiosis that is similar to mitosis is...Ch. 11 - If a muscle cell of atypical organism has 32...Ch. 11 - Which statement best describes the genetic content...
Ch. 11 - The pea plants used in Mendel’s genetic...Ch. 11 - How do telophase I and telophase II differ during...Ch. 11 - What is a likely evolutionary advantage of sexual...Ch. 11 - Which type of life cycle has both a haploid and...Ch. 11 - What is the ploidy of the most conspicuous form of...Ch. 11 - A diploid, multicellular life-cycle stage that...Ch. 11 - Hydras and jellyfish both live in a freshwater...Ch. 11 - Many farmers are worried about the decreasing...Ch. 11 - Describe the process that results in the formation...Ch. 11 - Explain how the random alignment of homologous...Ch. 11 - What is the function of the fused kinetochore...Ch. 11 - In a comparison of the stages of meiosis to the...Ch. 11 - Why would an individual with a mutation that...Ch. 11 - Does crossing over occur during prophase II? From...Ch. 11 - List and briefly describe the three processes that...Ch. 11 - Animals and plants both have diploid and haploid...Ch. 11 - Explain why sexual reproduction is beneficial to a...Ch. 11 - How does the role of meiosis in gamete production...Ch. 11 - How do organisms with haploid-dominant life cycles...
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- Mitosis Meiosis Definition Prophase Metaphase Anaphase Telophase Prophase I Metaphase I Anaphase I Telophase I Prophase II Metaphase II Anaphase II Telophase II Steps of each phase Number of cell divisions Number of cells produced *How many chromosomes per 46 daughter cell? * Mitosis starts with 46 chromosomes in each parent cell, and then ends with 46 chromosomes in each daughter cell. Cells divide onl once in Mitosis, but they divide twice during Meiosis, so we should end with half as many chromosomes in Meiosis vs Mitosis.arrow_forwardWhat phase of meiosis do chromatids align on spindle?arrow_forwardThe structure that gives terminal : stability of chromosomes is Kintochore O Centromere and telomeres Centromere O telomere Oarrow_forward
- A typical somatic cell from a badger, which is a diploid, sexually reproducing animal, contains a total of 32 chromosomes. Gametogenesis in badgers is similar to humans. What is the genome size for the badger in terms of chromosome number? How many DNA molecules would be found in a secondary oocyte before dividing? How many chromosomes would be found in a cell at metaphase? How many DNA molecules should be in a tetraploid liver cell from the badger?arrow_forwardArrange the following events of meiosis in the correct sequence * crossing over O synapsis terminalisation of chiasmata disappearance of nucleolusarrow_forwardIn dolphins, 2n=44. Drag each term or phrase to the correct position. (Each box is used once.) Somatic cell in anaphase of mitosis Ovum Somatic cell during interphase Zygote Sperm Cells with 22 chromosomes Cells with 44 chromosomes Cells with 88 chromosomesarrow_forward
- + 1. Complete the table below for chromosome and chromatid number for a human cell: Mitosis Prophase Metaphase Anaphase Telophase End of Mitosis Meiosis I Prophase Metaphase Anaphase Telophase End of Meiosis I Meiosis II Prophase Metaphase Anaphase Telophase End of Meiosis II Chromosome Number Chromatid Numberarrow_forwardMatch the letter of the term with its description. Centriole Chromosome Chromatid Diploid DNA Gene Haploid Description makes spindle fibers is the hereditary material in chromosomes a cell containing two complete sets of chromosomes a cell containing a single set of unpaired chromosomes code for a specific trait (e.g. ability to roll the tongue) one of a pair of identical chromosomes formed by the replication of a single chromosome any of several thread-like structures, made of chromatinarrow_forwardHow many chromosomes does a human normal haploid cell have? How many chromosomes does a human normal diploid cell have? How many are thesex chromosomes within each of them?arrow_forward
- (diploid) 2n female male (diploid) 2n (diploid) 2n 3 (haploid) n (haploid) n What does the number 6 in the image above show? male gamete mitosis fertilization meiosis female gametearrow_forwardA cell has a diploid number of 6 (2n = 6). a. Draw the cell in metaphase of meiosis I. b. Draw the cell in metaphase of mitosis. c. How many chromosomes are present in a daughter cell after meiosis I? d. How many chromatids are present in a daughter cell after meiosis II? e. How many chromosomes are present in a daughter cell after mitosis? f. How many pairs of homologous chromosomes are visible in the cell in metaphase of meiosis I?arrow_forwardFigure 10.6 Which of the following is the correct order of events in mitosis? Sister chromatids line up at the metaphase plate. The kinetochore becomes attached to the mitotic spindle. The nucleus reforms and the cell divides. Cohesin proteins break down and the sister chromatids separate. The kinetochore becomes attached to the mitotic spindle. Cohesin proteins break down and the sister chromatids separate. Sister chromatids line up at the metaphase plate. The nucleus reforms and the cell divides. The kinetochore becomes attached to the cohesin proteins. Sister chromatids line up at the metaphase plate. The kinetochore breaks down and the sister chromatids separate. The nucleus reforms and the cell divides. The kinetochore becomes attached to the mitotic spindle. Sister chromatids line up at the metaphase plate. Cohesin proteins break down and the sister chromatids separate. The nucleus reforms and the cell divides.arrow_forward
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