deÂ·bunk. tr.v. deÂ·bunked, deÂ·bunkÂ·ing, deÂ·bunks. To expose or ridicule the falseness, sham, or exaggerated claims of: debunk a supposed miracle drug. deÂ·bunkâ²er n. Word History: The bunk in debunk came from a place where much bunk has originated, the United States Congress.
The male gamete determines sex because each male gamete can contribute either an X or a Y chromosome Which of the following is true of an X-linked gene, but not of a Y-linked gene? A) It is only expressed in female offspring. B) The gene is present in both males and females. C) It is expressed in half of the cells of either male or female. D) It does not segregate like other genes. E) Sister chromatids separate during mitosis.
This means that almost any gene on the X, even if it is recessive in the female, will be expressed in males. These are referred to as X-linked genes. Genes found only on the Y chromosome are referred to as Y-linked genes, and expressed only in males. Genes on either sex chromosome can be called sex-linked genes. There are approximately 1,098 X-linked genes, though most of them are not for female anatomical characteristics. In fact, many are linked to disorders such as hemophilia, Duchenne muscular dystrophy, fragile-X syndrome and several others.