Similar results have been found in other studies [17] [18]. Based on these reports we have defined hard-to-heal ulcers in this study as venous leg ulcers with an initial area of 10cm2 or greater and a duration of six months or more.
A gene is a segment of DNA containing the code used to synthesize a protein. A chromosome contains hundreds to thousands of genes. Every human cell contains 23 pairs of chromosomes, for a total of 46 chromosomes. A trait is any gene-determined characteristic and is often determined by more than one gene. Some traits are caused by abnormal genes that are inherited or that are the result of a new mutation.
All human body cells contain 46 chromosomes (two sets of 23 chromosomes). Only the gametes (i.e., the sperm & eggs) contain 23 chromosomes (one set of 23 chromosomes) because two gametes combine to form a new person with 46 chromosomes in his body cells.Body cells grow and reproduce by the process of mitosis.For each human body cell (with 46 chromosomes) that undergoes mitosis, two identical human body cells (with 46 chromosomes) are produced. Gametes (i.e., sperm & eggs) are produced by meiosis.For example, in the testes of a man, for each body cell (with 46 chromosomes) that enters meiosis, four sperm (with 23 chromosomes) are produced. (Meiosis is a two part process, thatâs why four gametes are produced, not just two).nly the gametes (i.e., the sperm & eggs) contain 23 chromosomes (one set of 23 chromosomes) because two gametes combine to form a new person with 46 chromosomes in his body cells. Body cells grow and reproduce by the process of mitosis.