Question 12 Listen When does crossing over occur a) Metaphase of mitosis b) Prophase of mitosis c) Prophase of meiosis 2 d) Prophase of meiosis 1 e) Metaphase of meiosis 1 f) Metaphase of meiosis 2
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Genetics Question 12
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- Question 2 "Independent assortment" refers to assortment of sister chromosomes at the metaphase plate in meiosis I assortment of sister chromatids at the metaphase plate in meiosis I assortment of sister chromatids at the metaphase plate in meiosis II assortment of homologous chromosomes at the metaphase plate in meiosis II assortment of homologous chromosomes at the metaphase plate in meiosis I A assortment of sister chromosomes at the metaphase plate in meiosis IIQuestion 4 Consider a diploid organism with a diploid number of 30. Show your work and/or explain logic on all parts. a. How many total chromatids will be present in a typical cell at mitotic metaphase? b. How many tetrads are present in a metaphase I cell of meiosis? c. How many dyads are present in a metaphase II cell in meiosis? d. How many monads are expected in each product cell at the end of meiosis II?QUESTION 13 Assume that a diploid cell (2N=8) contains 4 pairs of chromosomes (3 pairs of autosomes and 1 pair of sex chromosomes) designated as 1m, 1p, 2m, 2p. 3m, 3p, Xm, and Xp where "m" stands for maternal origin and "p" stands for paternal origin. If nondisiunction for the Xm chromosome ocurred in meiosis I, what will be a likely chromosomal composition of the resulting 2 daughter cells at the end of this cycle? O 1m, 2p, 3p, Xm, Xp AND 1p, 2m, 3m, Xm, Xp O 1m, 2p, 3p, Xm, Xp AND 1р, 2m, 3m O im, 1m, 2p, 2p, 3p, 3p, Xm, Xm, Xp, Xp AND 1p, 1p, 2m, 2m, 3m, 3m, Xm, Xm, Xp, Xp O 1m, 1m, 2p, 2p, 3p, 3p, Xm, Xm, Xp, Xp AND 1p, 1p, 2m, 2m, 3m, 3m
- QUESTION 10 What stage(s) of meiosis does nondisjunction take place in? O A. Early and Late Interphase B. Prophase I C. Metaphase I or Metaphase II D. Anaphase I or Anaphase IIQuestion 1 (1 point) V Saved At the end of normal mitosis, the daughter cells are: haploid diploid homologues aneuploid Question 2 (1 point) V Saved At the end of normal meiosis, the daughter cells are: aneuploidQUESTION 1. Plant A is 2n = 40, and plant B is 2n = 42. If crossed, they produce a hybrid plant. How many chromosomes are found in a somatic cell of the hybrid? a) 42 b) 82 c) either 40 or 42, depending on which plant was female d) 41 e) 40
- Question 9 Match the following with the term that best describes them Holds chromatids together in the middle ✓ DNA complexed with basic histone proteins ✓ Chromosome arrangement of the organism ✓ Noodle-like structures that appear clearly after prophase stage of mitosis A. karyotype B. chromatin C. chromosomes D. centromereSelect the best answer or answers from the choices given: Relative to differences between mitosis and meiosis, choose the statements that apply only to events of meiosis. (a) tetrads present, (b) produces two daughter cells, (c) produces four daughter cells, (d) occurs throughout life, (e) reduces thechromosomal number by half, (f) synapsis and crossover of homologues occur.Question Discuss (i) haploid insects and lower plants where cell-division occurs, and (ii) some haploid cells in higher plants where cell-division does not occur.
- Translocations ___________ Part of OneChromosome to Another ChromosomeQUESTION 1 During which stage(s) of meiosis does DNA replication occur? A. Interphase B. Prophase I C. Anaphase I or Anaphase II D. Metaphase I or Metaphase II QUESTION 2 What is crossing over in meiosis? A. DNA exchanges between homologous chromosomes B. failure of chromosomes to separate properly C. when chromosomes go from looking like a single line to an X D. when chromosomes randomly line up across the middle of the cellThis is a three part question: Mitosis and meiosis are both processes of eukaryotic cell division, with the same names used to describe different stags. a. What are the significant cellular and chromosomal events that occur during each stage of mitosis? b. What are the similarities and differences between the events that occur during each stage of mitosis and the corresponding stage of meiosis I? c. What are the similarities and differences between the events that occur during each stage of mitosis and the corresponding stage of meiosis II?