Part 1 - Write the phase of meiosis that matches each description - be sure to write out the entire phase name and the number of the phase. Name of Phase Description Homologous chromosomes pair up and form tetrads. Crossing over takes place, and the nuclear membrane dissolves. Spindle fibers move homologous chromosomes to opposite sides Nuclear membrane reforms, cytoplasm divides, 4 daughter cells form Chromosomes line up along equator (middle) in 1 line, not in homologous pairs Chromatids separate Tetrads line up along the equator (middle), chromosome pairs form 2 lines Chromosomes move to the poles (sides). Cytoplasm divides, 2 daughter cells are formed Chromosomes condense and attach to spindle fibers

Part 1 - Write the phase of meiosis that matches each description - be sure to write out the entire phase name and the number of the phase. Name of Phase Description Homologous chromosomes pair up and form tetrads. Crossing over takes place, and the nuclear membrane dissolves. Spindle fibers move homologous chromosomes to opposite sides Nuclear membrane reforms, cytoplasm divides, 4 daughter cells form Chromosomes line up along equator (middle) in 1 line, not in homologous pairs Chromatids separate Tetrads line up along the equator (middle), chromosome pairs form 2 lines Chromosomes move to the poles (sides). Cytoplasm divides, 2 daughter cells are formed Chromosomes condense and attach to spindle fibers

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter6: Reproduction At The Cellular Level

Section: Chapter Questions

Problem 1ACQ: Figure 6.4 Which of the following is the correct order of events in mitosis? a. Sister chromatids...

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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?
A cell (2n = 4) has undergone cell division. Daughter cells have the following chromosome content. Has this cell undergone mitosis, meiosis I, or meiosis II?
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
Figure 6.4 Which of the following is the correct order of events in mitosis? a. Sister chromatids line up at the metaphase plate. The kinetochore becomes attached to the initotic spindle. The nucleus re-forms and the cell divides. The sister chromatids separate. b. The kinetochore becomes attached to the mitotic spindle. The sister chromatids separate. Sister chromatids line up at the metaphase plate. The nucleus re-forms and the cell divides. c. The kinetochore becomes attached to metaphase plate. Sister chromatids line up at the metaphase plate. The kinetochore breaks down and the sister chromatids separate. The nucleus re-forms and the cell divides. d. The kinetochore becomes attached to the mitotic spindle. Sister chromatids line up at the metaphase plate. The kinetochore breaks apart and the sister chromatids separate. The nucleus re-forms and the cell divides.
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.
Meiosis: Events Put the letter of each meiotic stage next to the correct event. Use each answer choice and only once. Synapsis and crossing over [Choose ] [Choose] Prophase I Telophase II Prophase I Telophase I Spindle forms Chromosomes decondense [Choose ] The cell contains two haploid sets of [Choose] chromosomes. Each chromosome is made up of two sister chromatids held together with a centromere.
Match the phases of meiosis with the correct description Metaphase I [ Choose ] [Choose ] Sister chromatids line up along the center of the cell. Cytokinesis produces four unique daughter cells, spindle dissolve, and the nuclear envelope reappears. Spindle fibers pull homologous pairs of chromosomes apart. Nuclear envelopes of daughter cells dissolve, and chromosomes condense. Spindle fibers pull sister chromatids apart. Homologous pairs of chromosomes line up at the center of the cell in tetrads. Cytokinesis produces two daughter cells, spindle dissolves, and nuclear envelope reappears. Nuclear envelope dissolves, DNA condenses and crossing over occurs. Anaphase II Prophase I Telophase I [Choose ] Prophase II [ Choose ] Telophase II [ Choose ] Anaphase I [ Choose ] Metaphase II [ Choose ] > > >
DNA content doubles during Meiosis I prophase Mitosis prophase Meiosis II prophase Mitosis prophase and Meiosis I prophase Interphase
Which of the following occur during Meiosis I? Select all that apply Spindle tension aligns the chromosomes in the center of the cell Homologous chromosomes align in the center of the cell Ploidy is changed from diploid to haploid Sister chromatids are separated
What separates during anaphase of Meiosis I? Pairs of sister chromatids from homologous pairs of sister chromatids (i.e. homologues separate) Sister chromatids separate from one another Nucleoids separate form one another The two strands of DNA separate from one another
Fill 3 blank spaces using MITOSIS MEIOSIS OR FERTILIZATION
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