plastic surgery surgery concerned with the restoration, reconstruction, correction, or improvement in the shape and appearance of body structures that are defective, damaged, or misshapen by injury, disease, or anomalous growth and development. This kind of surgery has been practiced for thousands of years.
The sex chromosome of females contains two X's while that for males contains one Y and one X. The presence of this last chromosome pair determines the gender of a baby. Apart from the X and Y difference, these chromosomes have many other differences which form the characteristics of the two genders.
A: The human male gamete, also known as a sperm cell, contains 23 chromosomes in total. Humans have 22 chromosome pairs as well as two sex chromosomes, for a ... Full Answer > Filed Under: Molecular Biology & DNA.