Introduction to Genetic Analysis
11th Edition
ISBN: 9781464109485
Author: Anthony J.F. Griffiths, Susan R. Wessler, Sean B. Carroll, John Doebley
Publisher: W. H. Freeman
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Chapter 4, Problem 21.8P
Summary Introduction
To determine: The meiosis the main focus of study.
Introduction: The main focus was on critical sex differentiation and meiosis regulator, DMRT1, which has also been linked to TGCT risk in recent genetic association studies.
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What stage of Meiosis makes it so significant?. Single line text.
, Draw a line down the middle of the page. On the LEFT side of the line, draw and label the following stages of Meiosis (in order): Metaphase I (one circle at the top of the page), Metaphase II (two circles, in the middle of the page) and gamete (four circles, at the bottom of the page). Start with a cell that is 2n=4 with two large and two small chromosomes. Make one “set” (one large and one small chromosome) the same color, and the other set a different color. Label one of the large chromosomes with allele “A” and the other allele “a”, like we did in class. Label one of the small chromosomes with allele “B” and the other allele “b”.) For replicated chromosome draw an X and for single chromatids draw a line ( / ). Since we are focusing on the DNA, you can skip drawing the nuclear membrane or spindle fibers. For simplicity, do not indicate crossover in your diagrams.
Now on the right side of the line on your page, please draw the second independent way homologs could line up Metaphase…
Which meiotic division(s) reduce(s) chromosome number (i.e., meiosis I, meiosis II, or both)? Explain your
answer.
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Chapter 4 Solutions
Introduction to Genetic Analysis
Ch. 4 - Prob. 1PCh. 4 - Prob. 5PCh. 4 - Prob. 12PCh. 4 - Prob. 13PCh. 4 - Prob. 14PCh. 4 - Prob. 15PCh. 4 - Prob. 16PCh. 4 - Prob. 17PCh. 4 - Prob. 18PCh. 4 - Prob. 19P
Ch. 4 - Prob. 20PCh. 4 - Prob. 21PCh. 4 - Prob. 21.1PCh. 4 - Prob. 21.2PCh. 4 - Prob. 21.3PCh. 4 - Prob. 21.4PCh. 4 - Prob. 21.5PCh. 4 - Prob. 21.6PCh. 4 - Prob. 21.7PCh. 4 - Prob. 21.8PCh. 4 - Prob. 21.9PCh. 4 - Prob. 21.10PCh. 4 - Prob. 21.11PCh. 4 - Prob. 21.12PCh. 4 - Prob. 21.13PCh. 4 - Prob. 21.14PCh. 4 - Prob. 21.15PCh. 4 - Prob. 21.16PCh. 4 - Prob. 21.17PCh. 4 - Prob. 21.18PCh. 4 - Prob. 21.19PCh. 4 - Prob. 21.20PCh. 4 - Prob. 21.21PCh. 4 - Prob. 21.22PCh. 4 - Prob. 21.23PCh. 4 - Prob. 21.24PCh. 4 - Prob. 21.25PCh. 4 - Prob. 21.26PCh. 4 - Prob. 22PCh. 4 - Prob. 23PCh. 4 - Prob. 24PCh. 4 - Prob. 25PCh. 4 - Prob. 26PCh. 4 - Prob. 27PCh. 4 - Prob. 28PCh. 4 - Prob. 29PCh. 4 - Prob. 30PCh. 4 - Prob. 31PCh. 4 - Prob. 32PCh. 4 - Prob. 33PCh. 4 - Prob. 34PCh. 4 - Prob. 35PCh. 4 - Prob. 36PCh. 4 - Prob. 37PCh. 4 - Prob. 38PCh. 4 - Prob. 38.1PCh. 4 - Prob. 38.2PCh. 4 - Prob. 38.3PCh. 4 - Prob. 38.4PCh. 4 - Prob. 38.5PCh. 4 - Prob. 38.6PCh. 4 - Prob. 38.7PCh. 4 - Prob. 38.8PCh. 4 - Prob. 38.9PCh. 4 - Prob. 38.10PCh. 4 - Prob. 38.11PCh. 4 - Prob. 38.12PCh. 4 - Prob. 38.13PCh. 4 - Prob. 38.14PCh. 4 - Prob. 38.15PCh. 4 - Prob. 38.16PCh. 4 - Prob. 38.17PCh. 4 - Prob. 38.18PCh. 4 - Prob. 38.19PCh. 4 - Prob. 38.20PCh. 4 - Prob. 38.21PCh. 4 - Prob. 38.22PCh. 4 - Prob. 38.23PCh. 4 - Prob. 38.24PCh. 4 - Prob. 39PCh. 4 - Prob. 40PCh. 4 - Prob. 41PCh. 4 - Prob. 42PCh. 4 - Prob. 43PCh. 4 - Prob. 44PCh. 4 - Prob. 45PCh. 4 - Prob. 46PCh. 4 - Prob. 47PCh. 4 - Prob. 48PCh. 4 - Prob. 49PCh. 4 - Prob. 50PCh. 4 - Prob. 51PCh. 4 - Prob. 52PCh. 4 - Prob. 53PCh. 4 - Prob. 54PCh. 4 - Prob. 55PCh. 4 - Prob. 56PCh. 4 - Prob. 57PCh. 4 - Prob. 58PCh. 4 - Prob. 59PCh. 4 - Prob. 60PCh. 4 - Prob. 62PCh. 4 - Prob. 63PCh. 4 - Prob. 64PCh. 4 - Prob. 65PCh. 4 - Prob. 66PCh. 4 - Prob. 67PCh. 4 - Prob. 68PCh. 4 - Prob. 69P
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- Label the different stages of meiosis using arrows (attached image)arrow_forwardThis figure shows a grasshopper testis with differential staining and viewed under a microscope. Encircle the cell and label the specific stage in meiosis it displays. Identify as many as you can with a minimum of two cells representing different stages. Make sure to specify whether the stage belongs to meiosis I or II. If you identify a cell at prophase I, then specify the substagearrow_forwardGiven the karyogram below, anSW Is this a male or female? female Do you see any abnormality? Yes 13 Write the karyotype (genetically speaking)|arrow_forward
- Drag the X and Y chromosomes to the drawings below, lining them up properly for metaphase I and metaphase II of meiosis for a male. A pair of autosomes is already included in the drawings, and a diploid cell is shown at the left for reference. Diploid cell Autosomes X YY 8 a Sex chromosomes Metaphase II Gametes Metaphase I A X { Xy Xy aa XX AA aa XX YY X X XX a aarrow_forwardWhat is Meiosis? Show the overview of Meiosis.arrow_forwardDiagram 1: Diagram 2:arrow_forward
- Encircle the cell and label the specific stage in meiosis it displays. Identify as many as you can with a minimum of two cells representing different stages. Make sure to specify whether the stage belongs to meiosis I or II. If you identify a cell at prophase I, then specify the substage.arrow_forwardMatch the stage of meiosis to it's description. Watch for ”cell” versus ”cells”. Singular versus plural is a clue that will help you pick the right roman numeral.arrow_forwardA diploid cell undergoes meiosis to form the four gametes shown below. H OHhQq OhQ q Part 1 What is the genotype of the diploid cell? Hq OHHhhQQqq 99 HH H QQ Part 2 Arrange the chromosomes for the diploid cell as they must have lined up during metaphase I of meiosis in order to make the gametes shown above. The vertical dotted line represents the metaphase plate. hh q HH X Q h Q harrow_forward
- Write the symbols of the chromosomes inside the given figures (spermatozoon, ovum and zygote) below corresponding to the 3 trials of syngamy you draw from the boxes. Answer the blank spaces on the right side of each syngamy produced. Aneuploidy________________________ Sex______________________________ Genetic Condition_________________________ Non Disjunction Type________________arrow_forwardFill in the cells below showing the NORMAL process of meiosis of the male's sex chromosomes (XY – the X and Y are representing the entire chromosome, and remember X and Y act like a homologous pair). DO NOT show crossing over. prior to meiosis 44 +XY What are the possible normal gametes produce after meiosis division? Identify the possible sex of the offspring if these normal sperm cells are fertilized by the egg cell.arrow_forwardIf the mother cell has 10 chromosomes, draw the stages of mitosis, meiosis 1 and meiosis 2 using blue and red pencils only for the chromosomes.arrow_forward
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