During prophase II, chromosomes condense and the nuclear envelope breaks down, if needed. The centrosomes move apart, the spindle forms between them, and the spindle microtubules begin to capture chromosomes.
Does the nucleus go away during prophase 2?
During prophase, the chromosomes condense, the nucleolus disappears, and the nuclear envelope breaks down.
What does the nucleus do during prophase?
During prophase, the complex of DNA and proteins contained in the nucleus, known as chromatin, condenses. The chromatin coils and becomes increasingly compact, resulting in the formation of visible chromosomes. Chromosomes are made of a single piece of DNA that is highly organized.
What happens in prophase II?
During prophase II, the chromosomes condense, and a new set of spindle fibers forms. The chromosomes begin moving toward the equator of the cell. During metaphase II, the centromeres of the paired chromatids align along the equatorial plate in both cells.
Which of the following happens during prophase 2?
During prophase II, chromosomes condense and the nuclear envelope breaks down, if needed. The centrosomes move apart, the spindle forms between them, and the spindle microtubules begin to capture chromosomes. … The two sister chromatids of each chromosome are captured by microtubules from opposite spindle poles.
What happens during prophase quizlet?
What happens during prophase? A cells genetic DNA condenses, spindle fibers begin to form and the nuclear envelope dissolves. … The duplicated chromosomes line up and spindle fibers connect to the centromeres. You just studied 9 terms!
What happens during interphase answers?
During interphase, the cell grows and makes a copy of its DNA. During the mitotic (M) phase, the cell separates its DNA into two sets and divides its cytoplasm, forming two new cells.
What is metaphase II?
Metaphase II is the second stage in meiosis II. … The cell is in metaphase II when the chromosomes align themselves along the metaphase plate through the facilitation of the spindle fibers. The spindle fibers are now attached to the two kinetochores contained in the centromere of each chromosome.
Which of the following occurs during metaphase II?
The correct answer is (b) Chromosomes migrate to the middle of the cell. Just as in metaphase of mitosis, metaphase II of meiosis occurs when…
How is prophase 1 and 2 different?
Prophase 1 is the initial phase of meiosis 1 and prophase 2 is the initial phase of meiosis 2. … The main difference between prophase 1 and 2 is that genetic recombination occurs through crossing overs and the “Chiasmata” formation during prophase 1 whereas no genetic recombination is noticed at the prophase 2.
What happens in Prometaphase 2 of meiosis?
During prometaphase II, the nuclear envelopes are completely broken down, and each sister chromatid forms an individual kinetochore that attaches to microtubules from opposite poles. During metaphase II, sister chromatids are condensed and aligned at the equator of the cell.
Does crossing over occur in prophase 2?
Crossing over does not occur during prophase II; it only occurs during prophase I. In prophase II, there are still two copies of each gene, but they are on sister chromatids within a single chromosome (rather than homologous chromosomes as in prophase I).
Does interkinesis follow prophase 2?
Unsourced material may be challenged and removed. Interkinesis or interphase II is a period of rest that cells of some species enter during meiosis between meiosis I and meiosis II. … Interkinesis follows telophase I; however, many plants skip telophase I and interkinesis, going immediately into prophase II.
What happens to the chromatids in anaphase 2?
During anaphase II, the third step of meiosis II, the sister chromatids of each chromosome separate and move toward opposite poles. Once they are no longer connected, the former chromatids are called unreplicated chromosomes.