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 5RQ
At metaphase I, homologous chromosomes are connected only at what structures?
- chiasmata
- recombination nodules
- microtubules
- kinetochores
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autosomes
centromeres
centrosomes
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interphase
The part of the cell cycle during which the chromosomes
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One of the two identical halves of a replicated chromosome.
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Microtubule organizing centers at the spindle poles.
The connection between sister chromatids.
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doubled chromosomes (sister chromatids) are dragged to either end of the cell
motor proteins pull chromosomes
doubled chromosomes split into their individual single chromosomes
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Spindle fibres attached to centromeres
46 double stranded chromosomes lined up along the metaphase plate
Diploid cell
2n =
ANAPHASE
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Spindle fibres attaches to centromeres of the single stranded chromosomes
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Diploid cell
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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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- The mitotic spindles arise from which cell structure? centromere centroscme kinetochore cleavage furrowarrow_forwardWhich of the following structures are associated with the ends of chromosomes and may shorten over many cell divisions? histones telomeres spindles all of the abovearrow_forwardWhich of the following statements is TRUE? None of these are TRUE Interphase chromosomes are loosely compacted, overlapping, and intertwined with each other within the nucleus. Radial loops in the condensing chromosome are formed due to interactions between 30 nm fibers and the scaffolding proteins of the nuclear matrix - producing the 300 nm fiber of the chromosome Interphase chromosomes are loosely compacted and do not associate with histones until the cell is preparing to divide. Interphase chromosomes are also known as euchromatin. Condensed, metaphase chromosomes are also known as heterochromatin.arrow_forward
- You would expect to find chromatin in which form during the Gap2 phase of the cell cycle? Replicated heterochromatin Chromatin in the same form as during metaphase of meiosis. Chromatin in the same form as during metaphase of mitosis Un replicated heterochromatin Replicated euchromatinarrow_forwardThe centromeric connections between chromatids fail to be severed. Kinetochores from sister chromatids become attached to microtubules from the same pole. A motor protein at the kinetochore is not functional. The chromosomes fail to attach to the kinetochore microtubules. Chromosomes will not move to the metaphase plate. Chromatids will not separate during anaphase. One kinetochore will detach from the spindle. Chromosomes will not move toward centrosome during prometaphase.arrow_forwardMatch the description on the left with the correct term on the right When the nuclear membrane dissolves andy the chromosomes appear Options: When the nuclear membranes reform and visible chromosomes go back to less coiled Prophase chromatin Metaphase Chromosomes line up along the midline of the Telophase cell Anaphase When sister chromatids separate and move to opposite sides of the cellarrow_forward
- Which of the following events occurs in metaphase? Multiple Choice Spindle disappears Nuclear envelopes reassemble Sister chromatids separate Chromosomes align along equatorarrow_forwardDuring meiosis, homologous sets of four chromatids are lined up along the cell's equator, attached to spindle fibers. Which of the following processes will happen next? Top of Form Anaphase I Telophase II Prophase I Metaphase IIarrow_forwardA somatic cell has 46 chromosomes aligned at metaphase. How many chromosomes are present at anaphase, immediately after the centromeres have split?arrow_forward
- In Coleus , the somatic cells are diploid with 24 chromosomes. How many of each of the following is present in each cell at the stage of mitosis and meiosis indicated below? kinetochore at prophase chromosomes at anaphase chromatids at metaphase 1 chromosomes at telophase after cytokinesis centromeres at anaphase chromosomes at telophase II after cytokinesis centromere at anaphase I chromatids at metaphasearrow_forwardHypothetically speaking, what will be the form of chromosomes if it will condense after S phase? sister chromatids Otelophase chromosome Osingle chromatid O homologous chromosomearrow_forwardDescriptions of Some Structures Involved in Cell Division Arrangement of stained chromosomes into homologous pairs from longest to shortest Non-condensed DNA A specialized region on chromosomes where sister chromatids are joined together A length of DNA and its associated proteins Description Number Chromosome Answer Chromatin Answer Karyotype Answer Centromere Answerarrow_forward
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cell division of meiosis and mitosis; Author: Stated Clearly;https://www.youtube.com/watch?v=A-mFPZLLbHI;License: Standard youtube license