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.
The Y chromosome carries very few genes for nonsexual traits; these few (including one for hairy ears) are called holandric genes. Certain inherited characteristics comprise X-linked traits, so called because a single X chromosome occurs in males. A recessive characteristic, e.g., when a gene leads to the expression of a disease such as hemophilia, may locate on the X sex chromosome in males and thus appear in that family.