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.
Human cells contain 23 pairs of chromosomes for a total of 46. There are 22 pairs of autosomes and one pair of sex chromosomes. The sex chromosomes are the X chromosome and the Y chromosome. Sex Chromosomes: In human sexual reproduction, two distinct gametes fuse to form a zygote.