21. Therefore, it is not a problem related to sexual development, nor with the sex chromosomes . 22. The evolution of the sex chromosomes has thus occurred independently in birds and in mammals. 23. The males are genetically identical to their mothers except they have one fewer sex chromosome . 24. "C . elegans " has five pairs of autosomes and one pair of sex chromosomes . 25. The X and Y chromosomes are the sex chromosomes . 26. Masculinizing surgery for completely virilized individuals with XX sex chromosomes and CAH is even rarer. 27. But even if they are, they are insinuating that reptiles don't have those sex chromosomes . 28. It is an autosomal disease, not associated with the sex chromosomes and can affect both sexes. 29. Like all mammals, humans are a sex chromosomes . 30. Other numerical abnormalities discovered include sex chromosome abnormalities.
