41. This mainly occurs with sex-linked genes ( i . e ., those on the sex chromosomes ). 42. In X-linked hearing loss, the mother carries the recessive trait for hearing loss on the sex chromosome . 43. I assume they've sequenced both X and Y sex chromosomes , so it could be male or female. 44. The platypus has ten sex chromosomes ; males have an XYXYXYXYXY pattern while females have ten X chromosomes. 45. Female-biased sex ratios also occur as a consequence of differential fertilization and genetic differentiation of sex chromosomes . 46. Respondents also commonly used diagnostic labels and referred to their sex chromosomes , with word choices depending on audience. 47. The platypus has a complex hybrid system, the male has ten sex chromosomes , half X and half Y. 48. In particular the sex chromosomes reptiles have . talk ) 23 : 41, 5 July 2008 ( UTC) 49. In humans, men carry two different sex chromosomes , an X and a Y, and women carry two X chromosomes. 50. That means that the defective gene lies on one of the sex chromosomes _ in this case, the X chromosome.
