AP BIOLOGY

CELL DIVISION

MEIOSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
During which phase of mitosis do homologous chromosomes line up at the equator of the cell?
A
Prophase I
B
Telophase II
C
Metaphase I
D
Metaphase II
Explanation: 

Detailed explanation-1: -Figure 2: Near the end of metaphase I, the homologous chromosomes align on the metaphase plate. At the start of metaphase I, microtubules emerge from the spindle and attach to the kinetochore near the centromere of each chromosome.

Detailed explanation-2: -During metaphase, chromosomes are organized on an equatorial plate. Metaphase is the stage of eukaryotic cell division when the chromosomes align in the middle of the cell.

Detailed explanation-3: -Metaphase I. During metaphase I, the homologous chromosomes are arranged in the center of the cell with the kinetochores facing opposite poles. The homologous pairs orient themselves randomly at the equator.

Detailed explanation-4: -Chromosomes line up at the metaphase plate, under tension from the mitotic spindle. The two sister chromatids of each chromosome are captured by microtubules from opposite spindle poles. In metaphase, the spindle has captured all the chromosomes and lined them up at the middle of the cell, ready to divide.

Detailed explanation-5: -An overview of the cell cycle and mitosis: during prophase the chromosomes condense, during metaphase the chromosomes line up, during anaphase the sister chromatids are pulled to opposite sides of the cell, and during telophase the nuclear envelope forms.

There is 1 question to complete.