AP BIOLOGY

LABORATORY REVIEW

MITOSIS AND MEIOSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If you see two nuclei and visible chromosomes, what stage are you looking at?
A
telephase
B
anaphase
C
cytokinesis
D
prophase
Explanation: 

Detailed explanation-1: -Mitosis ends with telophase, or the stage at which the chromosomes reach the poles. The nuclear membrane then reforms, and the chromosomes begin to decondense into their interphase conformations. Telophase is followed by cytokinesis, or the division of the cytoplasm into two daughter cells.

Detailed explanation-2: -During telophase, the newly separated chromosomes reach the mitotic spindle and a nuclear membrane forms around each set of chromosomes, thus creating two separate nuclei inside the same cell.

Detailed explanation-3: -Chromosomes become visible during prophase.

Detailed explanation-4: -During prophase I, homologous chromosomes form tetrads along the center of the cell. Full chromosomes are pulled to each pole during anaphase I, resulting in two haploid cells at the end of meiosis I. During prophase II, sister chromatids align at the center of the cell in singular chromosome structures.

Detailed explanation-5: -In mitosis, chromosomes reach opposite poles at the end of anaphase, and the nuclear membranes reform around each set of chromatids in telophase to form two separate nuclei. The chromosomes also uncoil to form chromatin during telophase.

There is 1 question to complete.