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.
Sex-linked Traits. If a gene is found only on the X chromosome and not the Y chromosome, it is said to be a sex-linked trait. Because the gene controlling the trait is located on the sex chromosome, sex linkage is linked to the gender of the individual. Usually such genes are found on the X chromosome. The Y chromosome is thus missing such genes (See Diagram above.). The result is that females will have two copies of the sex-linked gene while males will only have one copy of this gene.