In Brinjal eggplants, purple fruit is incompletely dominant to white fruit, with the heterozygote being light violet. What is/are the genotype(s) of: the megaspore mother cell of a plant with purple flowers? the polar nucleus of a plant with light violet flowers? the megasporocyte of a plant with white flowers? the companion cell of a plant with light violet flowers?
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In Brinjal eggplants, purple fruit is incompletely dominant to white fruit, with the heterozygote being light violet. What is/are the genotype(s) of:
- the megaspore mother cell of a plant with purple flowers?
- the polar nucleus of a plant with light violet flowers?
- the megasporocyte of a plant with white flowers?
- the companion cell of a plant with light violet flowers?
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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.In a particular plant species, 2n=12. For this organism, how many chromosomes, and how many DNA molecules will be present per cell for each of the following? e) root meristem cell in telophase of mitosis (cytokinesis complete) f) microspore mother cell (in anther) in prophase 1 of meiosis g) microspore mother cell in metaphase II of meiosis h) pollen grain ( after meiosis is and cytokinesis complete)As shown gives the number of chromosomes in a haploid set of chromosomes. What is the lowest number in the table? What is the highest number? Most cells in plants are diploid, having two sets of chromosomes,so the number per nucleus should be doubled. How many chromosomes are present in each diploid potato nucleus? If a potato plant has 1 million cells, each with one diploid nucleus, how many chromosomes are present in the entire plant?
- A triploid plant has 18 chromosomes (i.e., 6 chromosomes perset). If we assume a gamete has an equal probability of receivingone or two copies of each of the six types of chromosome, whatare the odds of this plant producing a haploid or a diploid gamete?What are the odds of producing an aneuploid gamete? If theplant is allowed to self-fertilize, what are the odds of producing aeuploid offspring?Assume that diploid plant A has a cytoplasm genetically different from that of plant B. To study nuclear–cytoplasmic relations, you wish to obtain a plant with thecytoplasm of plant A and the nuclear genome predominantly of plant B. How would you go about producingsuch a plant?Each sperm of a tomato plant contains seven chromosomes. What are the haploid and diploid number for tomatoes? haploid=7 and diploid=14 haploid=14 and diploid=7 haploid=7 and diploid=49 haploid=3 and diploid=7
- All of the following cells, shown in various stages of mitosis and meiosis, come from the same rare species of plant. a. What is the diploid number of chromosomes in this plant? b. Give the names of each stage of mitosis or meiosis shown. c. Give the number of chromosomes and number of DNA molecules per cell present at each stage.In the following diagram, designate each daughter cell as diploid (2n) or haploid (n).The long-nosed cusimanse is a diploid organism with n=18. According to wikipedia, the cusimanse has a weasel-shaped body with dark or reddish brown fur and weighs ~2 lbs at maturity. Laotia For each of the following, indicate the total number of chromosomes, the number of pairs of homologous chromosomes and the number of pairs of sister chromatids. Indicate if the cell in question is diploid or haploid and if the daughter cell will be diploid or haploid. A. A non-dividing skin cell Total number of chromosomes: Number of pairs of homologous chromosomes: Number of pairs of sister chromatids: boxe Diploid or haploid? B. A cell is metaphase of mitosis: Total number of chromosomes: Number of pairs of homologous chromosomes: Number of pairs of sister chromatids: Diploid or haploid? Daughter cell diploid or haploid? C. Cell in prophase meiosis I: Total number of chromosomes: Number of pairs of homologous chromosomes: Number of pairs of sister chromatids: Diploid or haploid? Daughter cell…
- Certain plants may have more than two copies of a chromosome. In some wild strawberries octoploid individuals exist! If the haploid number for these strawberries is 7, how many chromosomes are there in a somatic cell of an octoploid individual of this species?How many chromosomes would be found in somatic cells of an allotetraploid plant if its parent species had diploid (2n) numbers of 4 and 6 respectively?What is the name of the specific type of chromosomal abnormality present in the individual plant whose chromosomes are diagrammed above? Please DESCRIBE each of the four chromosomes by indication the chromosome pair to which it belongs, is it the "normal" version of the chromosome or the version that has undergone a chromosomal rearrangement, and specify the type or rearrangement present. (For example, indicate that a chromosome is the normal version of Chromosome #1, or the version of Chromosome #1 containing a ( ) (where you would mention the type of rearrangement present).