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3. Edwards syndrome is caused by an extra chromosome 18. This may result from primary nondisjunction...
The diagram represents such a meiosis beginning with a diploid cell containing synapsed chromosome 18’s (bivalent).As primary nondisjunction, draw in chromosome 18 in all of the cells shown, and on the lines provided write the chromosome formula (in number) and the total number of chromosomes in every cell. Cell 2n and 46 Meiosis 1 Cell 1 Cell 2 ? and ? ? and ? Meiosis 2 Cell 1 Cell 2 Cell 3 Cell 4 ? and ?----->
Down syndrome, or trisomy 21, in humans is caused by an extra copy of the relatively small, acrocentric 21. Including only chromosome 21, the X chromosome (medium in size and somewhat metacentric) and the Y chromosome (small and acrocentric), draw one possible array of chromosomes in the four sperm cells produced by the complete meiosis of one primary spermatocyte in a male individual with Down syndrome. For the purposes of this question, assume that males with Down syndrome produce normal...
please help and thank you Materials Needed per class: 1 box of 24 microscope slides of meiosis 1 1 box of 24 microscope slides of meiosis 2 red and yellow popbead chromosome kits Objectives To become familiar with the process of meiosis and to be able to identify the principal phases of meiosis To understand how the process of meiosis is similar to mitosis and how it differs from mitosis Introduction The genetic information of a cell is encoded in...