4. For (a) through (d) below, indicate whether the situation is true (possible) or false (not possible). Nondisjunction of sex chromosomes during human gamete formation may lead to individuals with sex chromosome trisomy. An individual with the sex chromosome trisomy of XXY may have resulted from nondisjunction occurring in: a. Meiosis I in the father's sperm production: T or F? b. Meiosis II in the father's sperm production: T or F? c. Meiosis I in the mother's egg production: T or F? d. Meiosis II in the mother's egg production: T or F?
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Nondisjunction (failure to separate) of sex chromosomes during human gamete formation may lead to individuals with sex chromosome trisomy. An individual with the sex chromosome trisomy of XXY may have resulted from nondisjunction occurring in (For each possibility below, write True or False and explain why): Meiosis I in the father's sperm production Meiosis II in the father's sperm production Meiosis I in the mother's egg production Meiosis II in the mother's egg production
Supreeta N.
Which of the following statements is TRUE? Select one: a. In humans, the meiotic product containing the X chromosome will also contain the maternal set of chromosomes only. b. After the process of meiosis it is just as likely that the resulting Y chromosome will have recombined as it is that a somatic chromosome would have. c. In women, it is possible that the X chromosomes in the meiotic products could contain both maternal and paternal (of that woman) chromosomal material. d. During Meiosis, the maternal and paternal chromosomes will segregate as a complete set except for the bits that have recombined. e. None of the above are true
Joanna Q.
Which of the following statements is true? a. Meiosis in both male and female humans produces 4 identical gamete cells b. All gametes from a particular individual will be genetically identical c. Four DNA molecules are associated together in a tetrad in meiosis I d. Meiosis reduces the amount of DNA in a cell due to there being no DNA replication occurring at any point in the process Which of the following is true about crossovers? a. As chiasmata, they help how homologous chromosomes together prior to anaphase of meiosis I b. They occur at the same place in all four DNA molecules in a meiotic tetrad c. They occur exclusively between sister chromatids d. They occur in both meiosis I and meiosis II
Shveta P.
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