Table of Contents
What phase does the chromosomes are moving towards the Pole?
In metaphase, chromosomes are lined up and each sister chromatid is attached to a spindle fiber. In anaphase, sister chromatids (now called chromosomes) are pulled toward opposite poles.
In what stage of mitosis are the daughter chromosomes moving towards the poles of the cell?
What Happens during Telophase? During telophase, the chromosomes arrive at the cell poles, the mitotic spindle disassembles, and the vesicles that contain fragments of the original nuclear membrane assemble around the two sets of chromosomes.
In which stage of mitosis do chromosomes move to the opposite ends of the cells along the spindle fibers?
Anaphase I: In anaphase I, the attachment of the spindle fibers is complete. The homologous chromosomes are pulled apart and move towards opposite ends of the cell. Do not confuse this with the pulling apart of sister chromatids! This is the point in which reduction occurs with 23 chromosomes moving to each pole.
How do chromosomes move to the metaphase plate?
Metaphase is marked by the alignment of chromosomes at the center of the cell, half way between each of the mitoic spindle poles. Movement is mediated by the kinetochore microtubles, which push and pull on the chromosomes to align them into what is called the metaphase plate.
When do chromosomes move to the opposite poles?
At metaphase the chromosomes line up along the middle of the cell. At anaphase the chromosomes begin to move and go to opposite ends of the cell due to the action of spindle fibres. Then at telophase the chromosomes are actually at individual sides of the cell and the spindle fibres break down. So, during Anaphase.
How are chromosomes formed in the metaphase phase?
metaphase chromatin coils and condenses, forming chromosomes chromosomes line up in the center of the cell chromatids are v-shaped chromosomes first appear to double spindle fibers form chromosomes stop moving toward the poles phase cells spend most of their time in; divided into 3 sub phases
What happens to the daughter chromosomes during telophase?
The daughter chromosomes migrate centromere first and the kinetochore fibers become shorter as the chromosomes near a pole. In preparation for telophase, the two cell poles also move further apart during the course of anaphase. At the end of anaphase, each pole contains a complete compilation of chromosomes.
Where do chromosomes go after they leave the nuclear membrane?
The nuclear membrane disappears completely. Polar fibers (microtubules that make up the spindle fibers) continue to extend from the poles to the center of the cell. Chromosomes move randomly until they attach (at their kinetochores) to polar fibers from both sides of their centromeres.