The normal chromosome number of a spermatogonium in a male lynx is The Canada lynx has a diploid number of 38 chromosomes. Select one: 2n = 38 n = 38 2n = 76 n = 19 O
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- A primary spermatocyte has the genotype AaBbee. The A and B loci are linked in cis configuration on the long arm of an acrocentric chromosome. The E locus is on a metacentric chromosome. Show the chromosomes containing these genes at Metaphase I, Telophase I and Telophase II using diagrams. Diagrams must be clearly labelledFill in the cells below showing the NORMAL process of meiosis of the male's sex chromosomes (XY – the X and Y are representing the entire chromosome, and remember X and Y act like a homologous pair). DO NOT show crossing over. prior to meiosis 44 +XY What are the possible normal gametes produce after meiosis division? Identify the possible sex of the offspring if these normal sperm cells are fertilized by the egg cell.Fill in the cells below showing the process of meiosis of the male's sex chromosomes with non- disjunction occurring during meiosis I. DO NOT show crossing over. Prior to meiosis 44 +XY What are the possible abnormal gametes the male can produce with non-disjunction occuring in Meiosis I? Identify the possible sexual aneuploidy syndrome if these abnormal sperm cells are fertilized by a normal egg cell. Could this man father a Tuner syndrome (XO) child? Could this man father a Klinefelter's syndrome child (XXY)?
- A primary spermatocyte has the genotype DdEe. These genes assort independently at Meiosis I. Show the chromosomes containing these genes at Metaphase I, Telophase I and Telophase II using diagrams. Diagrams must be clearly labelled and show metacentric chromosomes undergoing meiosis.Fill in the cells below showing the process of meiosis of the male's sex chromosomes with non- disjunction occuring during meiosis II. DO NOT show crossing over. Prior to meiosis 44 +XY What are the possible abnormal gametes the male can produce with non-disjunction occurring in Meiosis II? Identify the possible sexual aneuploidy syndrome if these abnormal sperm cells are fertilized by a normal egg cell. Could this man father a Tuner syndrome (XO) child? Could this man father a Klinefelter's syndrome child (XXY)?Explain how the X and Y chromosomes are able to pair together in meiosis as homologous chromosomes. Also, explain what role the SRY region of the Y chromosome plays in determining maleness.
- Diploid somatic cells of elephants have 56 chromosomes. If nondisjunction of one of a male elephant’s chromosomes occurs in meiosis II, at the end of meiosis the four resulting sperm are expected to have the chromosome complement:In cats, each cell normally contains 19 pairs of chromosomes (2n=38). How many chromosomes will be found in: Polar bodies Oogonia Spermatid Spermatozoan Spermatogonium Primary spermatocyte Secondary spermatocyteDuring meiotic divisions to make sperm, the cellular divisions at the end of meiosis I and II is unequal resulting in one gamete. True False
- A sexually reproducing organism has a haploid number of 4, consisting of two metacentric chromosomes and 2 telocentric chromosomes. Diagrammatically show the primary meiocyte in metaphase I, and the results of meiosis I and meiosis II.A sperm cell from the fruit fly Drosophila melanogaster contains four chromosomes. How many chromosomes would be present in a spermatogonial cell about to enter meiosis? How many chromatids would be present in a spermatogo- nial cell at metaphase I of meiosis? How many would be present at metaphase II?A normal somatic cell in horses has 64 chromosomes. Give the number of chromosomes and number of DNA molecules that will be present in the following horse cells: spermatogonia, first polar body, primary oocyte and, secondary spermatocyte.