Some of the possible treatments listed in sources for treatment of Stuttering may include: 1  Speech therapy. 2  Watchful waiting - many childhood cases disappear though some remain. 3  Treatment of an underlying problem. 4  Betaxolol. 5  Betoptic. 6  Betoptic-Pilo. 7  Betoptic-S. 8  more treatments...Â».
Sex Chromosomes. Sex chromosomes are particular chromosomes that are involved in determining the sex of an organism. In the cells of humans and many other organisms the sex chromosomes consist of a pair of chromosomes called the X and Y chromosomes. The X and Y chromosomes were first discovered in beetles by Nettie Stevens in 1906.
46 chromosomes because all cells except for sex cells have 46 chromosomes. Sex cells have only 23 chromosomes because joining with another sex cell will result in 46 chromosomes. 23 pairs of chromosomes (46) in all human cells, assuming that it is not from someone with Down's Syndrome or some other Trisomy.