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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Which of the following is not true in regard to crossover? a. Spindle microtubules guide the transfer of DNA across the synaptonemal complex. b. Nonsister chromatids exchange genetic material. c. Chiasmata are formed. d. Recombination nodules mark the crossover point.
A homologous pair is composed of
four sister chromatids, each with its owncentromere.
four sister chromatids attached at a common centromere.
four chromosomes with two sister chromatids each.
two chromosomes with two sister chromatids each.
two sister chromatids with separate centromeres.
Which of the following is a correct statement during life cycle events in a cell?
A. chromatids seperate during S phase
B. chromatids seperate during Meiosis II
C. chromatids seperate during cytokinesis
D. chromatids seperate during Meiosis I
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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- 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 centromerearrow_forwardThe figure above shows a metaphase in which one chromosome is only connected to the spindle by a single kinetochore, thus the sister chromatids may not separate correctly during anaphase. which of the following statement/s is/are correct;arrow_forwardAfter the DNA in a chromosome has replicated (made an identical copy) but still consists of two identical strands of DNA attached to each other, not yet separated, these structures are known as ________. daughter chromatids / daughter chromosomes sister chromatids cousin chromatids sister-in-law chromatids third cousin twice-removed chromatidsarrow_forward
- Which of the following statement(s) regarding homologous chromosomes is (are) true? CHOOSE ALL THAT APPLY Homolgues contain the same genes but their order on the chromosome differs In each tetraploid cell, there are two homologous chromosomes Homologous pairs exist in haploid cells. Homolgues contain the same genes but might contain different alleles Homologues become physically connected (pair up) during prophase Iarrow_forwardWhich of the following statements applies to homologous chromatids? -they are attached to the same centromere -they are genetically identical -they segregate from each other at anaphase of mitosis -they contain the same genes in the same order but have different alleles of some genes -more than one statement applies to homologous chromatidsarrow_forwardA duplicated chromosome consists of two ______. centromeres centrosomes genomes sister chromatidsarrow_forward
- The chromosome count of a cell at the beginning of prophase I is 12. What is the centromere count in a gamete belonging to the same organism? A. 48 B. 24 C. 6 D. 12 E. None of the answers are correctarrow_forwardWhat is shown in the image above? independent assortment anaphase I of meiosis crossing over replicationarrow_forwardWhat lines up at the center of the cell during Meiosis II? Sister chromatid pairs. Tetrads Nucleoids Replisomesarrow_forward
- A drawing of a cell in anaphase is provided. The cell contains 8 unreplicated chromosomes with alleles (H, h, F, f) properly labeled. The chromosomes are shown separating from each other with 4 chromosomes moving toward each side of the cell. Spindle fibers are labeled.arrow_forwardWhich of the following is a reason that the law of independent assortment is true Group of answer choices A. each pair of homologs act independently in anaphase II B. sister chromatids act independently in prophase II C.sister chromatids act independently in prophase I D. each pair of homologs act independently in anaphase Iarrow_forwardWhich of the following pairs is mismatched? Group of answer choices 1. Prophase – spindle forms 2. Anaphase – crossing over/recombination occurs 3. Telophase – nuclear envelope re-forms 4. Prophase – chromosomes condense 5. Metaphase – chromosomes line up along midline of cellarrow_forward
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