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 6RQ
Which of the following is not true in regard to crossover?
- Spindle microtubules guide the transfer of DNA across the synaptonemal complex
- Nonsister chromatids exchange genetic material
- Chiasmata are formed
- Recombination nodules mark the crossover point.
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What is occurring in the image below and what cell division process does this
Occur in? *
Homologous
chromosomes
Recombinant
chromatids
XX X XX
Bivalent
Non-sister
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Chiasma
chromatids chromatids
crossing over, mitosis
Select true or false in for each of the following statements about synapsis and crossover.
Sister chromatids exchange genetic material. Answertruefalse
Nonsister chromatids exchange genetic material. Answer true or false
Chiasmata are formed. Answer true or false
Recombination nodules mark the crossover point. Answer true or false
X and Y chromosomes partially synapse. Answer true or false
Synapsis occurs during both mitosis and meiosis, but crossover only occurs during meiosis. Answer true or false
Crossover results in new gene combinations. Answer true or false
Which of the following statements applies to non-sister chromatids?
they are genetically identical
they segregate from each other at anaphase of mitosis
they contain the same genes in the same order but may have different alleles
they are attached to each other at the centromere
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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- In the following diagram, designate each daughter cell as diploid (2n) or haploid (n).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_forwardWhich of the following statements are true regarding mitosis in humans?arrow_forward
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