24. A man who carries an X-linked allele will pass it on to (A) all of his sons. (B) half of his sons. (C) all of his daughters. (D) half of his daughters. (E) all of his children.

21. A major difference in the mechanism of action between steroid and peptide hormones is that (A) steroid hormones mainly affect the synthesis of proteins, whereas peptide hormones mainly affect the activity of proteins already in the cell. (B) target cells react more rapidly to steroid hormones than they do to peptide hormones. (C) steroid hormones enter the nucleus, whereas peptide hormones stay in the cytoplasm. (D) steroid hormones bind to a receptor protein, whereas peptide hormones bind to G protein. (E) steroid hormones affect metabolism, whereas peptide hormones affect membrane permeability.

24. A man who carries an X-linked allele will pass it on to (A) all of his sons. (B) half of his sons. (C) all of his daughters. (D) half of his daughters. (E) all of his children.

其他試題

24. A man who carries an X-linked allele will pass it on to
(A) all of his sons.
(B) half of his sons.
(C) all of his daughters.
(D) half of his daughters.
(E) all of his children.