Genetic Analysis: An Integrated Approach (3rd Edition)
3rd Edition
ISBN: 9780134605173
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 5, Problem 36P
Divide a clean sheet of paper into four quadrant and draw one pair of homologous chromosomes in each quadrant. Draw the chromosomes with two sister chromatids each. The four sets of homologous pairs are identicle. Label one chromosome of each pair with alleles
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Consider the following meiocyte in metaphase I. Solid black lines indicate spindle microtubules. Assume blue chromosomes represents paternal chromosomes and green maternal chromosomes.
A student determines the possible gametes that he/she believes can be produced from this cell, and provides you with the following options. Note that the alleles of each proposed gamete is contained within a set of brackets.Gamete 1: (abDe) Gamete 2: (DdEe) Gamete 3: (AaBb)Gamete 4: (DedE) Gamete 5: (aBdE) Gamete 6: (abdE)Gamete 7: (abAB) Gamete 8: (AbDe) Gamete 9: (dEab) i) How many DNA molecules were present in this cell at the start of the S-phase?ii) How many chromosomes will be present in each cell during Anaphase II? iii) Choose two of the proposed gametes that were produced by crossing over. Provide a reason for the gametes that you…
USING TWO DIFFERENT COLORS TO SIGNIFY THE MATERNAL AND PATERNAL CHROMOSOMES, DRAW THE RESPECTIVE
CELLS IN EACH LABELED PHASE OF MITOSIS AND MEIOSIS. THE CHROMOSOME NUMBER WILL BE "4" AND SHOULD BE
REPRESENTED AS TWO HOMOLOGOUS PAIRS. MAKE SURE YOU USE TWO DIFFERENT SIZES FOR EACH OF THE PAIRS.
BELOW EACH PHASE, BRIEFLY DESCRIBE WHAT HAPPENS.
MITOSIS
ΜEIOSIS I
MEIOSIS II
Crossing over needs to be illustrated
ACCURATE CELL NUMBER IS NEEDED
МЕТАРНАSE
ΑΝΑΡHASE
МЕТАРНASEI
ANAPHASE I
МЕТАРНАSE II
ANAPHASE II
Shown below are photomicrographs of Rhoeo tradescantia cells undergoing meiosis. Answer the following question for each of the photomicrographs:
Identify the cytogenetic abnormality observed (ex. ring, chain, laggard, bridge).
Identify the meiotic stage in which these aberrations are observed (as shown in the photomicrograph).
Explain how these aberrations are formed and relate to the possible causal mutation(s).
Will this result to sterile and/or fertile gametes? Explain.
Chapter 5 Solutions
Genetic Analysis: An Integrated Approach (3rd Edition)
Ch. 5 - For parts a, b, and c, draw a diagram illustrating...Ch. 5 - 5.2 In a diploid species of plant, the genes for...Ch. 5 - A pure-breeding tall plant producing oval fruit as...Ch. 5 - 5.4 Genes E and H are syntenic in an experimental...Ch. 5 - In tomato plants, purple leaf color is controlled...Ch. 5 - 5.6 In Drosophila, the map positions of genes are...Ch. 5 - 5.7 Genes A, B, and C are linked on a chromosome...Ch. 5 - Gene G recombines with gene T at a frequency of...Ch. 5 - Genes A, B, C, D, and E are linked on a...Ch. 5 - Syntenic genes can assort independently. Explain...
Ch. 5 - 5.11 The recombination frequency between linked...Ch. 5 - On the DrosophilaX chromosome, the dominant allele...Ch. 5 - Researchers cross a corn plant that is pure -...Ch. 5 - 5.14 syndrome is an autosomal disorder affecting...Ch. 5 - 5.15 Three dominant traits of corn seedlings,...Ch. 5 - 5.16 In a diploid plant species, an with the...Ch. 5 - Prob. 17PCh. 5 - The Rh blood group in humans is determined by a...Ch. 5 - 5.19 Genetic linkage mapping for a large number of...Ch. 5 - 5.20 with the genotype form tetrads in the...Ch. 5 -
Gene and gene are genetically linked. Answer...Ch. 5 -
T. H. Morgan’s data on eye color and wing form,...Ch. 5 - Prob. 23PCh. 5 -
The boss in your laboratory has just heard of a...Ch. 5 - In rabbits, chocolate-colored fur (w+) is dominant...Ch. 5 - Prob. 26PCh. 5 - 5.27 In tomatoes, the allele for tall plant height...Ch. 5 - 5.28 Neurofibromatosis is an autosomal dominant...Ch. 5 - A 2006 genetic study of a large American family...Ch. 5 - 5.30 A experiment examining potential genetic...Ch. 5 - A genetic study of an early onset form of heart...Ch. 5 - In experiments published in 1918 that sought to...Ch. 5 - DNA sequence for 10 individuals are Identify the...Ch. 5 - 5.34 The accompanying pedigree below shows a...Ch. 5 - 5.35 Based on previous family studies, an...Ch. 5 - Divide a clean sheet of paper into four quadrant...Ch. 5 - 5.37 For six genes known to be linked on chromosme...
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- Imagine a germ cell for an animal that is 2n=4. Gene A and B are found on chromosome one, and the cell is homozygous for A(AA) and heterozygous for Bb. Gene D is found on chromosome 2 and the germ cell is heterozygous for the Allee of the gene (Dd). Meiosis for this germ cell results in the following four gametes, and one crossing over event during meiosis ABD, ABd, AbD, Abd. Draw the chromosomes in cell during metaphase of meiosis 1. Make sure to include chromosomes, the allele in the correct locations on the chromosomes AFTER the crossing over event, and spindle fibers.arrow_forwardDraw a Punnett square for the dihybrid cross described below (it is the same story as given for question 8, above) and use it to fill in the blanks correctly in the text that follows. NOTE: Please type in whole numbers, no symbols. There are two known alleles of gene occupying a specific locus in the X chromosome. The gene in question codes for a transcription factor involved in digit development. The mutant allele is dominant and gives rise to an additional but non-functioning little finger (polydactyly) on both hands. A couple have had their DNA sequenced at the region of interest, the male exhibits polydactyly because of the mutation, the female is homozygous wild type at the same locus and therefore has the wild type phenotype. Both have green eyes. In this story; eye colour shows a monogenic autosomal inheritance pattern and the allele for brown eyes shows incomplete dominance with that for blue eyes, the heterozygote phenotype is green eyes. The genes for eye colour and…arrow_forwardA diploid (2n) trihybrid individual with the genotype EeFfGg can make eight genetically different gametes. Loci E/e and F/f are on chromosome 1 and locus G/g is on chromosome 2. Explain how a gamete containing the alleles e, f and g may be produced by meiosis. Refer specifically to meiotic events occurring during Prophase I, Metaphase I, Anaphase I and Anaphase II. (NB: remember to refer to the organism above).arrow_forward
- 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).arrow_forwardAn individual that is homozygous AABBcc is crossed to an individual that is homozygous aabbCC producing F1 individuals with genotype AaBbCc. Assume that the A, B, and C loci are all on the same chromosome. One chromatid at the start of meiosis (before crossing over) has the alleles A, B, and c. What alleles are on its sister chromatid? What alleles are on the homolog? Group of answer choices A. Sister chromatid ABc, Homolog no way to tell B. Sister chromatid ABC, Homolog abc C. Sister chromatid ABc, Homolog abC D. Sister chromatid abC, Homolog ABcarrow_forward, 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…arrow_forward
- Consult Figure 4, which shows the distribution of chromosome segregation for a cell with genotype M/m; B/b. For each panel, state whether the illustration is possible for mitosis, meiosis I, meiosis II, or not possible for the genotype. Assume no crossing over. Panel A: Possible during mitosis Possible during meiosis I Possible during meiosis II Not possible for the stated genotype Panel B: Possible during mitosis Possible during meiosis I Possible during meiosis II Not possible for the stated genotypearrow_forwardConsult Figure 4, which shows the distribution of chromosome segregation for a cell with genotype M/m; B/b. For each panel, state whether the illustration is possible for mitosis, meiosis I, meiosis II, or not possible for the genotype. Assume no crossing over. Panel C: Possible during mitosis Possible during meiosis I Possible during meiosis II Not possible for the stated genotype Panel D: Possible during mitosis Possible during meiosis I Possible during meiosis II Not possible for the stated genotypearrow_forwardA diploid germ cell containing "2n" number of chromosomes undergoes meiosis to produce four daughter cells. If a nondisjunction of an autosome happens during meiosis I, what are the chromosomal complements of the four daughter cells? Below the four circles represent the four daughter cells. Please fill in the chromosomal number by choosing from n-1, n, or n+1. ooooarrow_forward
- During 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_forwardA cat germ cell has a haploid number of 19 chromosomes.Complete the following table by stating the number of cells, the number of chromatids, and the number of chromosomes at the end of each of the following stages of meiosis and mitosis. (Please note this is an emply chart, I'm unsure why it got declined last time because it is not graded) Meiosis Meiosis Mitosis Prophase I Telophase I Telophase Number of cells Number of Chromatids Number of Chromosomesarrow_forwardA non-dividing yeti skin cell is shown below. Assuming a single crossover evetn occurs between the two indicated loci. What are the possible genotypes of the gametes produced after this cell has undergone meiosis I and meiosis II? (check all that apply) 00000000 AB aB Aa Ab/aB Aa/Bb Bb Ab abarrow_forward
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