Which of the following reasons explains a possible advantage of using adult stem cells in therapeutic cloning rather than embryonic stem cells? a. adult stem cells must be obtained from another individual before being injected into the patient and would be less likely to be rejected by the patient's body. b. embryonic stem cells wouldn't be able to enter the correct tissue of the patient's body, unlike an adult stem cell. c. adult stem cells have a longer lifespan in culture than embryonic stem cells and would persist for a longer time in the patient's body. d. adult stem cells may be obtained from the patient and would be less likely to be rejected by the patient's body.

interphase

the period of cell growth when the cell synthesizes new molecules and organelles. the cell is not dividing and it constitutes the majority of the time spent in the cell cycle

prophase

changes occur in the nucleus and cytoplasm. the chromatin condenses to form structures (sister chromatids) visible with a light microscope and the mitotic spindle begins to form, but the nucleus is still in tact

prometaphase

the nuclear envelope fragments and the spindle microtubules attach to the kinetochores of the sister chromatids

metaphase

all the cell's duplicated chromosomes are lined up at an imaginary plane equidistant between the poles of the mitotic spindle

anaphase

begins when sister chromatids separate from each other and ending when a complete set of daughter chromosomes arrives at each of the two poles of the cell

telophase

the daughter nuclei form at the two poles of a cell

cytokinesis

the division of a cytoplasm to form two separate daughter cells. usually occurs during telophase during mitosis. this and mitosis make up to mitotic (m) phase of the cell cycle