if you want to remove an article from website contact us from top.

    mitosis and meiosis are cell division mechanisms that lead to different numbers of daughter cells. which explanation best describes how these two processes maintain genetic continuity?

    James

    Guys, does anyone know the answer?

    get mitosis and meiosis are cell division mechanisms that lead to different numbers of daughter cells. which explanation best describes how these two processes maintain genetic continuity? from EN Bilgi.

    The cell cycle, mitosis and meiosis

    The cell cycle is the four stage process in which the cell becomes two cells. We provide academic materials for learning purposes for various levels of education.

    The cell cycle, mitosis and meiosis

    The cell cycle, mitosis and meiosis Mitosis

    DNA, in the form of chromosomes, is divided so that each daughter cell has a complete copy of the genetic material (or genome). Organisms that reproduce sexually have two copies of each chromosome, one from their father and one from their mother.

    Meiosis

    A special form of cell division needed to produce sex cells - for example, sperm and eggs with only one copy of each chromosome. Fusion of the sex cells creates a new individual with two copies of each chromosome.

    Many single-celled organisms reproduce by cell division and have a single copy of each chromosome.

    Source : le.ac.uk

    SC.912.L.16.17 Mitosis and Meiosis

    Home Departments Science Biology EOC Review

    SC.912.L.16.17 Mitosis and Meiosis

    SC.912.L.16.17 Mitosis and Meiosis

    ECSD Home Science Home

    End of Course Reviews

    Biology EOC Review

    NATURE OF SCIENCE

    SC.912.N.1.1 Scientific Method

    MOLECULAR AND CELLULAR BIOLOGY

    SC.912.L.14.1 Cell Theory

    SC.912.L.14.3 Cell Structure

    SC.912.L.16.3 DNA Replication

    SC.912.L.16.17 Mitosis and Meiosis

    SC.912.L.18.1 Macromolecules

    SC.912.l.18.9 Photosynthesis and Cellular Respiration

    SC.912.L.18.12 Properties of Water

    ORGANISMS, POPULATIONS AND ECOSYSTEMS

    SC.912.L.14.7 Plant Structure

    SC.912.L.14.26 The Brain

    SC.912.L.14.36 Cardiovascular System

    SC.912.L.14.52 Immune System

    SC.912.L.16.10 Biotechnology

    SC.912.L.16.13 Reproductive System

    SC.912.L.17.5 Population Size

    SC.912.L.17.9 Food Webs and Energy Transfer

    SC.912.L.17.20 Human Impact

    CLASSIFICATION, HEREDITY AND EVOLUTION

    SC.912.L.15.1 Evolution

    SC.912.l.15.6 Classification

    SC.912.L.15.8 Origin of Life

    SC.912.L.15.13 Natural Selection

    SC.912.L.16.1 Genetics

    WHAT YOU NEED TO KNOW...

    You need to know the differences and similarities in the processes of mitosis and meiosis and relate these to the processes of sexual and asexual reproduction.

    You need to know how mitosis and meiosis lead to genetic variation.

    You need to know the relationship between mutation, cell cycle, and uncontrolled cell growth potentially resulting in cancer.

    You need to know the cell cycle, including the process of mitosis and be able to explain the role of mitosis in the formation of new cells and its importance in maintaining chromosome number during sexual reproduction.

    EXAMPLE ONE

    Mitosis and meiosis are processes involved in cellular reproduction. Which of the following describes and event that results from mitosis but NOT meiosis?

    A. two stages of cell divisionB. replication of cellular genetic materialC. daughter cells that are identical to the parent cellD. four daughter cells that are produced from each parent cellCLICK HERE FOR ANSWER

    EXAMPLE TWO

    How are sexual reproduction and asexual reproduction different from each other?

    A. sexual reproduction requires two parents and asexual reproduction requires only one parentB. asexual reproduction requires two parents and sexual reproduction requires only one parentC. mutation rates are lower in sexual reproduction than in asexual reproductionD. asexual reproduction occurs only in multicellular organismsCLICK HERE FOR ANSWER

    EXAMPLE THREE

    Which type of reproduction leads to increased genetic variation on a population?

    A. Parthenogenesis B. asexual reproduction C. Sexual reproduction D. Vegetative reproductionCLICK HERE FOR ANSWER

    EXAMPLE FOUR

    Which of the following phrases best describes cancer?

    A. absence of cyclins in the DNAB. miltiple gene mutations on a chromosome of DNAC. uncontrolled cell growth caused by mutations in genes that control the cell cycleD. presence of genetic defects caused by hereditary disordersCLICK HERE FOR ANSWER

    EXAMPLE FIVE

    Which of the following phases of mitosis is represented by the diagram below?

    A. prophaseB. metaphaseC. anaphaseD. telophaseCLICK HERE FOR ANSWER

    EXAMPLE SIX

    A scientist wants to change the DNA of a sexually reproducing organism and have the new DNA present in every cell of the organism. In order to do this after fertilization, she would change the DNA in which of the following?

    A. zygoteB. placentaC. testes of the fatherD. ovaries of the motherCLICK HERE FOR ANSWER

    EXAMPLE SEVEN

    Which row in the chart below indicates the correct process for each event indicated?

    A. row 1B. row 2C. row 3D. row 4CLICK HERE FOR ANSWER

    EXAMPLE EIGHT

    The diagram below shows a cellular process that occurs in organisms.

    What is the name of this process?

    A. meiosisB. mitosisC. endocytosis

    Source : ecsd-fl.schoolloop.com

    Mitosis versus meiosis

    Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells. Below we highlight the keys differences and similarities between the two types of cell division.

    In: FACTS In the Cell

    Mitosis versus meiosis

    Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells. Below we highlight the keys differences and similarities between the two types of cell division.

    Differences

    Mitosis

    Involves one cell division?

    Results in two daughter cells

    Results in diploid? daughter cells? (chromosome? number remains the same as parent cell)

    Daughter cells are genetically identical

    Occurs in all organisms except viruses

    Creates all body cells (somatic?) apart from the germ cells? (eggs and sperm)

    Prophase is much shorter

    No recombination/crossing over occurs in prophase.

    In metaphase individual chromosomes (pairs of chromatids) line up along the equator.

    During anaphase the sister chromatids are separated to opposite poles.

    Meiosis

    Involves two successive cell divisions

    Results in four daughter cells

    Results in haploid? daughter cells (chromosome number is halved from the parent cell)

    Daughter cells are genetically different

    Occurs only in animals, plants and fungi

    Creates germ cells (eggs and sperm) only

    Prophase I takes much longer

    Involves recombination/crossing over of chromosomes in prophase I

    In metaphase I pairs of chromosomes line up along the equator.

    During anaphase I the sister chromatids move together to the same pole.

    During anaphase II the sister chromatids are separated to opposite poles.

    Similarities

    Mitosis Diploid parent cell

    Consists of interphase, prophase, metaphase, anaphase and telophase

    In metaphase individual chromosomes (pairs of chromatids) line up along the equator.

    During anaphase the sister chromatids are separated to opposite poles.

    Ends with cytokinesis.

    Meiosis Diploid parent cell

    Consists of interphase, prophase, metaphase, anaphase and telophase (but twice!)

    In metaphase II individual chromosomes (pairs of chromatids) line up along the equator.

    During anaphase II the sister chromatids are separated to opposite poles.

    Ends with cytokinesis.

    Share Tweet Pin

    This page was last updated on 2021-07-21

    Í What is mitosis? FACTS

    Mitosis is a process where a single cell divides into two identical daughter cells (cell division).

    What is meiosis? FACTS

    Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information. These cells are our sex cells – sperm in males, eggs in females.

    What is a cell? FACTS

    Cells are the basic building blocks of living things. The human body is composed of trillions of cells, all with their own specialised function.

    What is a stem cell?

    FACTS

    A stem cell is a cell with the unique ability to develop into specialised cell types in the body. In the future they may be used to replace cells and tissues that have been damaged or lost due to disease.

    Source : www.yourgenome.org

    Do you want to see answer or more ?
    James 11 month ago
    4

    Guys, does anyone know the answer?

    Click For Answer