notice that the appendages of the organisms in the picture contain an overall common structure but different functions. what is the best explanation on why these organisms share a common structure in number and organization of bones?
a) these organisms are all of the same species.
b) these organisms all evolved from a common ancestor.
c) these organisms passed on acquired traits to their offspring.
d) these organisms all lived in similar habitats and were therefore under similar environmental pressures.

Suppose a scientist measures the amount of dna per cell of a particular diploid species at various stages of meiosis. she finds that the meiotic cells contain 3.7 pg , 7.3 pg , or 14.6 pg of dna. match each stage of the cell cycle to the corresponding amount of dna contained within a cell at that stage.

The activity of the modern sample is 1.10 bq . how long does that measurement take?

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.