3. Draw the needed cells and identify the number of chromosomes Scenarios A parent somatic cell with 10 chromosomes A daughter gamete cell with 10 chromosomes A daughter haploid cell with 6 chromosomes A daughter diploid cell with 6 chromosomes A parent cell in the insect's wing with 80 chromosomes Cell division produced a sperm cell with 50 chromosomes Find the number of Chromosomes in daughter or parent cell: Daughter cell: Parent cell: Parent cell: Parent cell: Daughter cell: Parent cell:

1. Fill in this table: Mitosis Meiosis Type of reproduction (sexual or asexual) # of cell/nuclear divisions Synapse/ crossing over? (yes or no) Centromeres dissolve Meiosis 1? during anaphase? Meiosis II? Chromosome # at beginning? Chromosome # at end of process? Meiosis I? Meiosis II? # of daughter nuclei? Daughter cells the same as parent cell? Daughter cells genetically identical to cach other? 2. a. A cell has n=2. How many total chromosomes are in a diploid cell? b. Draw this cell during metaphase of mitosis:

The figure shows chromosomes, and sister chromatids in a cell. Which of the following are true? Select all that apply This is a diploid cell There are total six chromosomes present in the cell There are 12 chromatids The value ofn is 3

2. The amount of DNA in a Drosophila melanogaster somatic cell equals 8 during G1 of interphase, how much DNA is present in the cell during each phase of mitosis and meiosis? Amount of G2 Phase Prophase Metaphase Anaphase Telophase DNA in: Mitosis 8. Meiosis I 8. Meiosis II 4

mat Arrange Tools Slide Show Window Help A 12% D Sat 2:02 PM 2 Chapter 13 clicker questions imations Slide Show Review View Shape Format O Tell me e Share V Play Narrations Always Use Subtitles V Use Timings Rehearse Record Timings Slide Show V Show Media Controls A Subtitle Settings v What allows sister chromatids to finally separate, and in which phase of meiosis does this occur? a) release of cohesin along sister chromatid arms in anaphase I b) crossing over of chromatids in prophase I c) release of ohesin at centromeres in anaphase I d) release of cohesin at centromeres in anaphase II e) crossing over of homologs in prophase I O 2017 Pearson Education, Inc 103% :: E Notes Comments étv MacBook Pro 80 888 * ( & $ 8 9 6 7

mitosis nuclei resides in the nucleus karyotype autosomes haploid In dividing parent cell; in the parent cell. Male and female gametes at fertilization forms a homologs Microscopic observations showed that during fertilization, the unite, providing evidence that genetic material resides in the cell membrane Brightly staining, threadlike bodies within the nucleus were termed of these bodies could be traced through cell division. chromosomes diploid A image can reveal abnormalities in meiosis of eggs and sperm ; the movements gametes contain a single set of chromosomes. The fusion of zygote. the number of chromosomes in daughter cells remains the same as in the the number of chromosomes in daughter cells is half that of Two chromosomes that match in size, shape, and banding when isolated and stained are is an image of an individual's chromosomes arranged in homologous pairs. This chromosome number and structure nondisjunction

When chromatids are separated during anaphase, how do we know that the microtubules that they are connected to are not actually shortening to "pull" the chromatids apart?

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DRAW OUT CLEARLY each of these chromosomes labeling as appropriate (demoed in class) The cell has a diploid number of 8 Each pair has a set of linked genes that are located on each end of the chromosome (paternal on left, maternal on right) Pair 1 AB and ab Pair 2 DE and de Pair 3 Fg and fG Pair 4 hI and Hi Show what the chromosomes would look like in G1, G2, TI and TII

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