ACHIEVE:INTRO TO GENETIC ANALYSIS 1TERM
12th Edition
ISBN: 9781319401399
Author: Griffiths
Publisher: MAC HIGHER
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Chapter 3, Problem 30P
Summary Introduction
To determine: The genotypes of the daughter cells.
Introduction: Cell division gives rise to genetically identical cells in which the number of chromosomes is maintained
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A diploid cell has 15 picograms of DNA in G₁ phase. If this cell is a germ line cell that undergoes meiosis, how much DNA will each daughter cell contain at the end of
meiosis I? How much DNA will each daughter cell contain at the end of meiosis II?
MI = 30 pg: MII = 15 pg
O MI = 15 pg; MII = 15 pg
MI = 7.5 pg; MII = 15 pg
O MI = 15 pg: MII = 7.5 pg
For an organism with 3 pairs of chromosomes (6 total chromosomes, 2n = 6), draw chromosome diagrams for the following phases of meiosis: prophase I, metaphase I, anaphase I, telophase I, prophase II, metaphase II, anaphase II & telophase II. Be sure to draw the correct number of chromosomes and the correct number of chromatids per chromosome. Use a different color to represent each chromosome type (for example, use blue to indicate all copies of chromosome 1, red for all copies of chromosome 2, and green for all copies of chromosome 3).
Draw and label the mitotic phases (prophase, metaphase, anaphase & telophase) and meiotic phases (prophase I, metaphase I, anaphase I, telophase I, prophase II, metaphase II, anaphase II, & telophase II) for 2N=6. Be sure to indicate the chromosomal complement at each stage and whether the chromosomes are duplicated (consisting of sister chromatids) or not.
For the meiotic phases, please add the following labels to your diagrams:
In prophase I: tetradIn metaphase I: nonsister chromatidsIn anaphase I: homologous chromosomes, kinetochore microtubule
In telophase I: sister chromatidsIn prophase II: centriolesIn metaphase II: centromereIn anaphase II: nonkinetochore microtubule, astral raysIn telophase II: cleavage furrow
Chapter 3 Solutions
ACHIEVE:INTRO TO GENETIC ANALYSIS 1TERM
Ch. 3 - Prob. 1PCh. 3 - Prob. 2PCh. 3 - Prob. 3PCh. 3 - Prob. 4PCh. 3 - Prob. 5PCh. 3 - Prob. 6PCh. 3 - Prob. 7PCh. 3 - Prob. 8PCh. 3 - Prob. 9PCh. 3 - Prob. 10P
Ch. 3 - Prob. 11PCh. 3 - Prob. 12PCh. 3 - Prob. 13PCh. 3 - Prob. 14PCh. 3 - Prob. 15PCh. 3 - Prob. 16PCh. 3 - Prob. 17PCh. 3 - Prob. 18PCh. 3 - Prob. 19PCh. 3 - Prob. 20PCh. 3 - Prob. 21PCh. 3 - Prob. 22PCh. 3 - Prob. 23PCh. 3 - Prob. 24PCh. 3 - Prob. 25PCh. 3 - Prob. 26PCh. 3 - Prob. 27PCh. 3 - Prob. 28PCh. 3 - Prob. 29PCh. 3 - Prob. 30PCh. 3 - Prob. 31PCh. 3 - Prob. 32PCh. 3 - Prob. 33PCh. 3 - Prob. 34PCh. 3 - Prob. 35PCh. 3 - Prob. 36PCh. 3 - Prob. 37PCh. 3 - Prob. 38PCh. 3 - Prob. 39PCh. 3 - Prob. 40PCh. 3 - Prob. 41PCh. 3 - Prob. 42PCh. 3 - Prob. 43PCh. 3 - Prob. 43.1PCh. 3 - Prob. 43.2PCh. 3 - Prob. 43.3PCh. 3 - Prob. 43.4PCh. 3 - Prob. 43.5PCh. 3 - Prob. 43.6PCh. 3 - Prob. 43.7PCh. 3 - Prob. 43.8PCh. 3 - Prob. 43.9PCh. 3 - Prob. 43.10PCh. 3 - Prob. 43.11PCh. 3 - Prob. 43.12PCh. 3 - Prob. 43.13PCh. 3 - Prob. 43.14PCh. 3 - Prob. 43.15PCh. 3 - Prob. 44PCh. 3 - Prob. 45PCh. 3 - Prob. 46PCh. 3 - Prob. 47PCh. 3 - Prob. 48PCh. 3 - Prob. 49PCh. 3 - Prob. 50PCh. 3 - Prob. 51PCh. 3 - Prob. 52PCh. 3 - Prob. 53PCh. 3 - Prob. 54PCh. 3 - Prob. 55PCh. 3 - Prob. 56PCh. 3 - Prob. 57PCh. 3 - Prob. 58PCh. 3 - Prob. 59PCh. 3 - Prob. 61PCh. 3 - Prob. 62PCh. 3 - Prob. 63PCh. 3 - Prob. 64PCh. 3 - Prob. 65PCh. 3 - Prob. 66PCh. 3 - Prob. 67PCh. 3 - Prob. 70PCh. 3 - Prob. 1GSCh. 3 - Prob. 2GSCh. 3 - Prob. 3GS
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- What would be the amount of DNA picograms during Prophase I, Metaphase I, Anaphase I and after Cytokinesis during Meiosis I for a diploid (2n=4)?arrow_forwardSuppose there are two genes on two different chromosomes, one gene called G and the other called D. An individual has the genotype GgDd. Which of the following drawings correctly shows cells in this individual after DNA replication but before cell division of the first meiosis? Assume no recombination/crossing-over occurs between the chromosomes. a) G|GgTg 11 11 D--Da-d 1 N Gg Gg D-d Dd b) d) G+gGg 7/2007 D-d D-d GG gtg DD ddarrow_forwardS1arrow_forward
- What would be the number of chromosomes and chromatids for a cell (2n=4) in each phase (S-phase, Prophase, Metaphase, Anaphase and Telophase/Cytokinesis) of Meiosis I and II?arrow_forwardIn a diploid cell where 2n=8, how many chromatids are present in prophase?arrow_forwardIf the DNA content of a diploid cell in the G1 phase of the cell cycle is X, then the DNA content of the same cell at metaphase of meiosis would be 2X 0.25X 0.5X 4Xarrow_forward
- An individual heterozygous for a reciprocal translocation possesses the following chromosomes: A B • C D E F G A B • C D V W X R S • T U E F G R S • T U V W X Q. Draw the pairing arrangement of these chromosomes in prophase I of meiosis.arrow_forwardDuring metaphase I of meiosis, tetrads align along the metaphase plate independently of each other. Therefore, there is a random “shuffle” of maternal and paternal chromosomes in the resulting gametes.The following diagram demonstrates how this works in a diploid cell with four chromosomes . Because there are two pairs of chromosomes and each pair can align in one of two ways during metaphase I, the number of possible variations in the gametes produced is , or .For an organism that is , there are three pairs of chromosomes, so the number of possible variations in the gametes produced due to independent assortment in metaphase I is , or . In an organism with a haploid number of , how many possible combinations of maternal and paternal chromosomes can occur in its gametes? Select one: a. 72=49 b. 27=128 c.17=1 d. 214=16 384arrow_forwardIf there are 9 chromosome pairs, what is the chromosome number at telophase I (after cytokinesis)?arrow_forward
- is the same chrosome type of the parent and daughter cells after mitosis an indication that they are identical? explainarrow_forwardIn an organism with a diploid number of 16, how many chromatids are present in each of the following phases: Mitotic metaphase Meiotic metaphase I Meiotic metaphase IIarrow_forwardIndicate the stage of meiosis (e.g., metaphase 2 = M2; prophase 1 = P1; anaphase 2 = A2; etc.) in which each of the following events occurs. first cell stage in which the original maternal/paternal chromatid doublets (chromosomes) are in separate cells chromosomes (chromatid doublets) first synapse (tetrads are visible) chromosomes (chromatid doublets, but NOT tetrads) line up in single file one doublet next to the other crossing over and recombination occurschromatid doublets move toward opposite poles of cellchromosomes (DNA) replicatechromatids separate as centromeres dividechromosomes (chromatid doublets) line up as tetrads at the cell’s equatorarrow_forward
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