The photomicrograph below shows mitotically dividing cells from whitefish (Coregonus lavaretus). a. What stage of nuclear division is not observed in the Cell 1 photomicrograph? b. A group of naturally occurring diploids of this species has 40 pairs of chromosomes. b.1. Considering the stage shown in Cell 1, how many centromeres would you expect? b.2. What is the chromosome number of the species by the end Cell 2 of the stage shown in Cell 3?_ b.3 How many chromatids should there be at the stage shown in Cell 3 Cell 2? C. lavaretus (Magnification:400x)

The photomicrograph below shows mitotically dividing cells from whitefish (Coregonus lavaretus). a. What stage of nuclear division is not observed in the Cell 1 photomicrograph? b. A group of naturally occurring diploids of this species has 40 pairs of chromosomes. b.1. Considering the stage shown in Cell 1, how many centromeres would you expect? b.2. What is the chromosome number of the species by the end Cell 2 of the stage shown in Cell 3?_ b.3 How many chromatids should there be at the stage shown in Cell 3 Cell 2? C. lavaretus (Magnification:400x)

Name: 1 The photomicrograph below shows mitotically dividing cells from whit
Uploaded: 2024-03-20T06:42:55.000Z
Channel: Bartleby
Description: 1 The photomicrograph below shows mitotically dividing cells from whitefish (Coregonus lavaretus).a. What stage of nuclear division is not observed in theCell 1photomicrograph?b. A group of naturally occurring diploids of this species has 40 pairsof

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter6: Cytogenetics: Karyotypes And Chromosome Aberrations

Section: Chapter Questions

Problem 14QP: Variations in Chromosome NumberAneuploidy Describe the process of nondisjunction and explain when it...

See similar textbooks

Similar questions

a. Manually, using a pencil, draw a cell in anaphase II from an organism in which 2n = 2 and each chromosome is metacentric. b. Given that each G1 nucleus from this organism contains 16 picograms of DNA, how many picograms of chromosomal DNA would you expect in the cell shown here?
Assuming all of the chromosomes present during Meiosis II are shown in the figure above, how many chromosomes (counting homologous pairs as two chromosomes) does a cell from this organism have immediately after fertilization?
This is a three part question: Mitosis and meiosis are both processes of eukaryotic cell division, with the same names used to describe different stags. a. What are the significant cellular and chromosomal events that occur during each stage of mitosis? b. What are the similarities and differences between the events that occur during each stage of mitosis and the corresponding stage of meiosis I? c. What are the similarities and differences between the events that occur during each stage of mitosis and the corresponding stage of meiosis II?
A) Give the diploid number of this organism. B) Is it mitosis or meiosis? Give two (2) elements on which you base your reasoning. C) Identify this mystery phase of the cell cycle. D) How many daughter cells will be produced at the end of the process and how many chromosomes (in numbers) will they contain? E) How does this process ensure the genetic variability of individuals of the species? Your answer must be based on two (2) different elements.
A micrograph of a mutated dividing cell from a zebrafish showed 19 chromosomes, each consisting of two sister chromatids. Which of the following stages of cell division would you expect such micrograph have been taken? a. prophase I of meiosis b. telophase II of mitosis c. prophase of mitosis d. prophase II of meiosis
Variations in Chromosome NumberAneuploidy Describe the process of nondisjunction and explain when it takes place during cell division.
Give explanation X and Y chromosomes are not homologs, but in meiosis they do pair and segregate in XY organisms to create 50% haploid gametes with an X chromosome and 50% haploid gametes with a Y chromosome. How is pairing achieved? a. Since all other homologous chromosomes pair, the remaining two chromosomes pair by default. b Pairing proteins are capable of binding to different genes on the X and Y chromosomes, which allows them to pair. c. None of the statements is correct. d. They don't actually pair. Random segregation generally ensures the X and Y chromosomes separate. e.Pseudoautosomal regions that are homologous exist at the tips of both the X and Y chromosomes, and they allow pairing.
Give only typing answer with explanation and conclusion A diploid species has a total of 52 chromosomes. How many chromosomes would be found in a monosomy, trisomy, and autotriploid, respectively?
You are asked to prepare a karyotype of any species.what type of cell division you will look at to arrange chromosomes in order and how?
Diploid vs. Haploid: Given 2n = 30a. Haploid (n) number? b. This organism has a total of how many chromosomes? c. How many different pairs of chromosomes does this organismhave?
What result demonstrated that the spindles shorten at the chromosome end during anaphase? Group of answer choices a) The stained region of the microtubules didn’t move b) The stained region of the microtubules moved away from the chromosome c) The stained region of the microtubules stayed the same size d) The stained region of the microtubules moved towards the chromosome e) The stained region of the microtubules got larger
The garden pea (Pisum sativum) is normally a diploid and has 7 chromosomes in one set (in other words, n = 7). Use this information to answer the following questions: a. How many centromeres would be in a cell of a tetraploid pea plant? ______ b. How many total chromatids would be in a cell of a tetraploid pea plant in metaphase of mitosis? _______ c. How many total chromosomes would be in a cell of a pea plant that is monosomic for a single chromosome?