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

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter11: Meiosis And Sexual Reproduction

Section: Chapter Questions

Problem 10RQ: Which statement best describes the genetic content of the two daughter cells in prophase II of...

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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.
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The segregation of chromosomes in cell division is a result of O the random way each pair of homologous chromosomes lines up at the metaphase plate during meiosis I O the random distribution of the sister chromatids to the two daughter cells during meiosis II O the random nature of the fertilization of ova by sperm O the random distribution of the homologous chromosomes to the two daughter cells during meiosis II O the random exchange of genetic material between homologous chromosomes
3) The small beads (pink and blue) on the chomatids represent the segments of DNA that have been swapped between non-sister chromatids within a tetrad. What is the term for this exchange of genetic information that occurs in prophase 1? MEIOSIS I. Cytoplasm Nuclear membrane Nucleus Prophase I
A. 1. Division of the cell nucleus, results in two daughter nuclei, each have the same number of chromosomes as the parent nucleus. 2. One two identical halves of a duplicated chromosome. 3. Fusion of haploid (n) gametes; results in the formation of a diploid (2)n zygote. 4. The breaking and rejoining of homologous (non sister) chromatids during early meiotic prophase I, resulting in an exchange of genetic material. 5. The diploid (2n) cell that results from the union of haploid (n) gametes in sexual reproduction. 6. The condition of having one set of chromosomes per nucleus. 7. The complex of DNA, proteins and some RNA that makes up eukaryotic chromosomes. 8. Structures in the cell nucleus, composed of chromatin and containing the genes. 9. An X-shaped site in a tetrad marking the location where homologous chromatids previously underwent crossing over. 10. A sex cell; in plants and animals, an egg or sperm. 11. Type of reproduction in which two gametes (usually, but not necessarily,…
In what stage(s) of meiosis do events leading to genetic variation occur? I Prophase I II Prophase II III Metaphase I IV Metaphase II I only I and III II and IV III only
18. Asnwer
MITOSIS MEIOSIS 1. Haploid cells are produced 2. Crossing over takes place 3. One division 4. Diploid cells 5. Formation of tetrads 6. Somatic cells 7. For sexual reproduction 8.2 daughter cells 9. Two divisions 10.Separation of homologous chromosomes 11.Daughter cels with chromosomes identical to parent cell 12. For repair of damaged tissue 13 Cross-linkage of genes 14 Sex cells 15 Daughter cells not identica to the parent cell O 0 O 0 O OO0 O o o O 0 0 o 0 O O O O O
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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 I
After telophase I of meiosis, the chromosomal makeup of cach daughter cell is: ) diploid, and the chromosomes are cach composed of a single chromatid. diplaid, and the chromosomes are cach compased of two chromatids. O haploid, and the chromosomes are cach composed of a single chromatid. haploid, and the chromosomes are cach composed of two chromatids.