Which of the following statements explains why the insertion of a nucleotide in a DNA sequence could result in a change in the appearance of an organism. Fatty acids would no longer attach to the dna strands to transcribe the DNA The dna would no longer fit through the nuclear membrane so it can locate a ribosome The sequence of bases in the DNA would no longer code for the correct amino acids. Antibodies would no longer recognize the DNA

Which of the following occurs after a natural or unnatural disturbance in an ecosystem

Hormones are chemical molecules produced by endocrine glands. one such endocrine gland is the thyroid gland, which synthesizes the thyroid hormone, which in turn affects the heart muscles. which two statements describe the probable reason for the function of the hormone? the cells in the heart have specific receptors that allow for the intake of hormones. the heart and the endocrine glands have the exact same types of cells. all cells make the same types of hormones. thyroid hormones show their effect on the heart by means of specialized cells. thyroid cells and cardiac cells have different dna.

Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.