3 1Aa2AllADaughter of normal meiosis IDaughter of abnormal meiosis Iwhere non-disjunction occurred3Daughter of a normal meiosis IIThe 5 cells drawn schematically here illustrate one chromosome, or onehomologous pair of chromosomes, in daughter cells produced by meiosis I ormeiosis II in an Aa heterozygous diploid. These cells are not themselvesundergoing meiosis; focus on the chromosomal complement in each cell ratherthan the arrangement of chromosomes. Black circles represent centromeres.Match each description on the left to one of the drawings using the numbers 1-5 above.[Choose ][Choose ]A[Choose ]A5 merosis in III dI Ad Telerozygous uipivia. Miese tens are not themselvesundergoing meiosis; focus on the chromosomal complement in each cell ratherthan the arrangement of chromosomes. Black circles represent centromeres.Match each description on the left to one of the drawings using the numbers 1-5 above.Daughter of normal meiosis IDaughter of abnormal meiosis Iwhere non-disjunction occurredDaughter of a normal meiosis IIDaughter of abnormal meiosis IIdivision where non-disjunctionoccurredDaughter of a normal meiosis IIwhere non-disjunction occurredduring the preceding meiosis I[Choose ][Choose ][Choose ]✓ [Choose ]5134

During meiosis, I, homologous chromosomes pair up and exchange genetic material through a process…

1 A 2 Daughter of normal meiosis I Daughter of abnormal meiosis I where non-disjunction occurred 3 Daughter of a normal meiosis II The 5 cells drawn schematically here illustrate one chromosome, or one homologous pair of chromosomes, in daughter cells produced by meiosis I or meiosis II in an Aa heterozygous diploid. These cells are not themselves undergoing meiosis; focus on the chromosomal complement in each cell rather than the arrangement of chromosomes. Black circles represent centromeres. Match each description on the left to one of the drawings using the numbers 1- 5 above. [Choose ] [Choose ] 4 [Choose ] 5 A

1 A 2 Daughter of normal meiosis I Daughter of abnormal meiosis I where non-disjunction occurred 3 Daughter of a normal meiosis II The 5 cells drawn schematically here illustrate one chromosome, or one homologous pair of chromosomes, in daughter cells produced by meiosis I or meiosis II in an Aa heterozygous diploid. These cells are not themselves undergoing meiosis; focus on the chromosomal complement in each cell rather than the arrangement of chromosomes. Black circles represent centromeres. Match each description on the left to one of the drawings using the numbers 1- 5 above. [Choose ] [Choose ] 4 [Choose ] 5 A

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter13: Modern Understandings Of Inheritance

Section: Chapter Questions

Problem 3VCQ: Figure 13.6 Which of the following statements about nondisjunction is true? Nondisjunction only...

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The chromosome constitution number of this individual is 2=6. This drawing represents: a. mitotic metaphase. b. meiotic metaphase I. c. meiotic metaphase II. d. a gamete. e. sixnonhomologous chromosomes.
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 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
Compare meiotic anaphase I with meiotic anaphase II. Which meiotic anaphase is most similar to the mitotic anaphase?
Meiotic nondisjunction usually occurs during meiosis I. What isnot separating properly: bivalents or sister chromatids? What is notseparating properly during mitotic nondisjunction?
Somatic cells in organisms of a particular diploidplant species normally have 14 chromosomes. Thechromosomes in the gametes are numbered from 1through 7. Rarely, zygotes are formed that containmore or fewer than 14 chromosomes. For each of thezygotes below, (i) state whether the chromosomecomplement is euploid or aneuploid; (ii) provideterms that describe the individual’s genetic makeupas accurately as possible; and (iii) state whether ornot the individual will likely develop through theembryonic stages to make an adult plant, and if so,whether or not this plant will be fertile.a. 11 22 33 44 5 66 77b. 111 22 33 44 555 66 77c. 111 222 333 444 555 666 777d. 1111 2222 3333 4444 5555 6666 7777
In humans, the diploid chromosome number is 46 (2N = 46). For each of the meiotic stages listedbelow, supply the correct number of chromosomes. -Meiotic Stage Chromatids at Prophase ICentromeres at Prophase IITetrads at Prophase I (pachytene)Chromatids at Telophase IlChromosomes at Metaphase IIDyads at Anaphase I
What would 2n=6 cells in metaphase I of meiosis look like? DG A В D XX XX O A
Refer to the drawings in the figure below of a single pair of homologous chromosomes as they might appear during various stages of either mitosis or meiosis II IV VI Which diagram represents anaphase I of meiosis? II IV O000
Identify the stages of meiosis described by the following meiotic events/conditions/terms. Write prophase I, metaphase I, anaphase I, telophase I, prophase II, metaphase II, anaphase II, or telophase II. In case the events are found in both stages, write the stages both. 1. Formation of chiasma 2. Each chromatid is considered as full-fledged chromosome. 3. Chromosomes begin to pair off. 4. Spindle microtubules start to attach to the centromere. 5. Tetrads are aligned at the middle of the cell. 6. The sister chromatids separate. 7. Produce 2 haploid daughter cells. 8. The chromosomes line up at the middle of the cell. 9. The sister chromatids move together to the opposite poles. 10. The chromatids reach the poles. 11. The chromosomes in each daughter cell are still duplicated.12. Spindle microtubules attach in the centromere of each haploid daughter cell. 13.
During what phase of meiosis do homologous chromosomes separate? O anaphase I O metaphase I O telophase || O anaphase || metaphase II
Using the images of meiosis found in this microscope image of meiosis, create a biological drawing for any two stages of meiosis (prophase I or II, metaphase I or II, anaphase I or II, or telophase I or II). Both cells should be included in the same drawing.