The second portion of the chapter deals with muscular fatigue, including the most likely causes of fatigue to various categories of activity, and muscle soreness. Methods of assessing muscular strength are presented in the third section of the chapter.
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. Gametes are reproductive cells produced by a type of cell division called meiosis. Gametes are also called sex cells. They contain only one set of chromosomes and are said to be haploid. The male gamete, called the spermatozoan, is relatively motile and usually has a flagellum. The female gamete, called the ovum, is nonmotile and relatively large in comparison to the male gamete.
Best Answer: Sex chromosomes are either X or Y. They determine the sex of the baby... XX = female. XY = male Autosomes are every chromosome except for the sex chromosomes. They have no affect in the outcome of the sex of the organism Humans have 46 chromosomes, which means we have 23 pairs. The 23rd pair of human chromosomes are sex chromosomes. All 22 other pairs are autosomes.