Turner Syndrome occurs when an individual inherits one X chromosome but lacks a second sex chromosome. If a phenotypically normal couple has a child with Turner syndrome that is also color-blind (a recessive X-linked allele), did nondisjunction occur during oogenesis or spermatogenesis in this child's parent? oogenesis Meiosis I oogenesis Meiosis II spermatogenesis Meiosis I spermatogenesis Meiosis IIA phenotypically abnormal individual has a phenotypically normal father with one abnormal copy of chromosome 7 and a normal mother without any changes in chromosome structure. The order of genes along chromosome 7 in the father is as follows: RTD M centromere PU XZC (normal 7) RTD UP centromere M XZC (abnormal 7) Use this information for the next 2 questions. The fathers abnormal chromosome is the result of what type of event? Pericentric inversion Paracentric inversion balanced translocation unbalanced translocationA phenotypically abnormal individual has a phenotypically normal father with one abnormal copy of chromosome 7 and a normal mother without any changes in chromosome structure. The order of genes along chromosome 7 in the father is as follows: RTD M centromere PU XZC (normal 7) RTD UP centromere M XZC (abnormal 7) The phenotypically abnormal offspring has a chromosome 7 with the following order of genes: RTD M centromere PU DTR How was this chromosome formed? During the the mother's gamete production, an inversion of RTD. During the father's gamete production, a crossover between sections D and T. During the mother's gamete production, a crossover between sections D and M. During the father's gamete production, a crossover between centromere and section P. During the mother's gamete production, a crossover between centromere and section P. During the the father's gamete production, an inversion of RTD..