Arabidopsis thaliana is a diploid plant model organism with 2n number options to match the following: 10. Please select the %3D number of copies of each gene an Arabidopsis thaliana leaf cell has 1 number of chromosomes an Arabidopsis thaliana leaf cell contains 1. two number of chromosomes an 2. five Arabidopsis thaliana gamete cell contains 3. ten pairs of homologous chromosomes an 2 Arabidopsis thaliana leaf cell contains
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- In the plant, Haplopappus gracile there is one long pair and one short pair of chromosomes. In the diagrams below, anaphase of individual cells in meiosis or mitosis in a plant that is heterozygous for the genes, A and B (which are on separate chromosomes) are shown. The lines represent chromosomes or chromatids and the points of the "V" are the centromeres. For each case, indicate if the cell represents meiosis I, meiosis II, mitosis, or impossible situation. Provide a brief (one sentence) reason for your decision. 1. A A a В a B 9. A a B A a 2. а В В a A a B 9. B. a A 3.a Kemlan - Volum x O Maulina Kemlan - Perso X M Inbox (407) - kemlanm2 x G calculator - Google Sear x A Acellus: m/StudentFunctions/Interface/acellus_engine.html?ClassID=693717332 Unit 2 Exam Cell Division us m What type of cells are created during meiosis? A. diploid gametes B. haploid somatic cells C. haploid (reproductive) cells Using Alte Serve ht 2003 - 2021 Acellus Corporation. All Rights Reserved. Σ26 of 40 21 22 23 24 25 26 27 28 29 30 Miller, Timia Polyploid plants form as a result of a beneficial mutation that often makes them larger and stronger than diploid plants. These plants form when a complete set of chromosomes fails to separate during meiosis creating plants with extra chromosomes. What type of mutation has this result? O frameshift O nondisjunction substitution O translocation https://student.masteryconnect.com/%3 9/0
- Arabidopsis thaliana is a diploid plant model organism with 2n 10. Please select the number options to match the following number of copies of each gene an Arabidopsis thaliana 1 leaf cell has number of chromosomes an Arabidopsis thaliana leaf cell contains 1. two 2. five number of chromosomes an Arabidopsis thaliana gamete cell contains 3. ten pairs of homologous chromosomes an Arabidopsis thaliana 2 leaf cell containsA sexually reproducing organism has the following phenotype DdEeAaTt: The D and E loci are on the same arm of a metacentric chromosome in cis configuration. The A locus is on the long arm of an acrocentric chromosome and the T locus is on a telocentric chromosome. There are no other chromosomes. 1. What is the haploid number of this organism? 2. Using diagrams, show a cell at metaphase of mitosis and show the results of mitosis. Ensure you show the location of the gene loci on the different chromosomes.Diploid nuclei of the ascomycota fungus Neurospora crassa contain 14 chromosomes. A single diploid cell in an ascus will eventually turn into a total of eight ascospores. What is the chromosome count in a single mature Neurospora ascospore? -28 -none of the options are correct -21 -7 -14
- Picture name - Tradescantia spathacea meiotic cell. HPO (400x)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.The plant Haplopappus gracilis has a 2n of 4. A diploid cellculture was established and, at premitotic S phase, aradioactive nucleotide was added and was incorporatedinto newly synthesized DNA. The cells were then removed from the radioactivity, washed, and allowed to proceed through mitosis. Radioactive chromosomes or chromatids can be detected by placing photographic emulsionon the cells; radioactive chromosomes or chromatids appeared covered with spots of silver from the emulsion.(The chromosomes “take their own photograph.”) Drawthe chromosomes at prophase and telophase of the firstand second mitotic divisions after the radioactive treatment. If they are radioactive, show it in your diagram. Ifthere are several possibilities, show them, too.In the following diagram, designate each daughter cell as diploid (2n) or haploid (n).
- 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.Consider the true diploid plant cell (2n=4) below. The paternally derived blue chromosomesare of two types, metacentric and acrocentric. These chromosomes contain the same gene pattern andstructural features as the maternally derived purple chromosomes. Consider two genes A and B whichare found on the metacentric and acrocentric chromosome pairs, respectively. Assume the father passedon A and B alleles, and the mother passed on a and b alleles. a. Show the possible loci of these genes (specify alleles) on the image. Label both sister chromatids in each chromosome. (Note: Sister chromatids are products of replication.)b. Draw the four possible gametes formed after meiosis assuming there was no crossing over. Label the gene loci.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