compared to an organism that reproduces asexually. What process that occurs during meiosis is responsible for creating a high degree of variation? formation of two nuclei during telophase I separation of sister chromatids during metaphase II crossing over during prophase I doubling of chromosomes during interphase

compared to an organism that reproduces asexually. What process that occurs during meiosis is responsible for creating a high degree of variation? formation of two nuclei during telophase I separation of sister chromatids during metaphase II crossing over during prophase I doubling of chromosomes during interphase

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter6: Cytogenetics: Karyotypes And Chromosome Aberrations

Section: Chapter Questions

Problem 8QP: Tetraploidy may result from: a. lack of cytokinesis in meiosis II b. nondisjunction in meiosis I c....

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Which statement best describes the genetic content of the two daughter cells in prophase II of meiosis? haploid with one copy of each gene haploid with two copies of each gene diploid with two copies of each gene diploid with four copies of each gene
Chiasmata: a. form during metaphase II of meiosis. b. occur between two nonhomologous chromosomes. c. represent chromosomes independently assorting. d. are sites of DNA exchange between homologous chromatids. e. ensure the resulting cells are identical to the parent cell.
A 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?
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.
If a muscle cell of atypical organism has 32 chromosomes, how many chromosomes will be in a gamete of that same organism? 8 16 32 64
In a cell at __________, each chromosome consists of a pair of attached chromatids, (a) mitotic prophase (b) meiotic prophase II (c) meiotic prophase I (d) meiotic anaphase I (e) all the preceding
Figure 13.6 Which of the following statements about nondisjunction is true? Nondisjunction only results in gametes with n+1 or n-1 chromosomes. Nondisjunction occurring during meiosis II results in 50 percent normal gametes. Nondisjunction during meiosis I results in 50 percent normal gametes. Nondisjunction always results in four different kinds of gametes.
Match each term with the best description. __ interphase a. different forms of a gene __ metaphase I b. useful for varied offspring __ alleles c. none between meiosis I and meiosis II __ zygotes d. chromosome lineup __ gametes e. haploid __ males f. form at fertilization __ prophase I g. mash-up time
A diploid cell has _ ____ the number of chromosomes as a haploid cell. a. one-fourth b. one-half c. twice d. four times
Explain how the random alignment of homologous chromosomes during metaphase I contributes to variation in gametes produced by meiosis.
Match each term with its description. ___interphase a. different forms of a gene ___metaphase I b. useful for varied offspring ___alleles c. none between meiosis I and meiosis II ___zygotes d. chromosome lineup ___gametes e. haploid ___males f. form at fertilization ___prophase I g. mash-up time
Match the phase of cell division with the following diagrams. In these cells, 2n = 4. a. anaphase of meiosis I b. interphase of mitosis c. metaphase of mitosis d. metaphase of meiosis I e. metaphase of meiosis II