Table of Contents
What is the difference between early prophase and late prophase?
Answer. Explanation: Early prophase – the nuclear membrane becomes more and more indistinct and the chromatin fibers become more and more packaged and condensed. late prophase – the nuclear membrane and the nucleolus finally vanishes completely.
What happens during late prophase in mitosis?
In late prophase (sometimes also called prometaphase), the mitotic spindle begins to capture and organize the chromosomes. The chromosomes become even more condensed, so they are very compact. The nuclear envelope breaks down, releasing the chromosomes.
What happens in early prophase during mitosis?
Prophase is the first phase of mitosis, the process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells. During prophase, the complex of DNA and proteins contained in the nucleus, known as chromatin, condenses.
What happens in early prophase meiosis?
During prophase I, the complex of DNA and protein known as chromatin condenses to form chromosomes. The pairs of replicated chromosomes are known as sister chromatids, and they remain joined at a central point called the centromere.
What happens late metaphase?
During metaphase and late prometaphase, the cell performs as series of checkpoints to ensure that the spindle has formed. The microtubules emanating from each side of the cell attach to each chromosome. As the microtubules are retracted, an equal tension is applied from each side of the cell the chromosomes.
What happens early anaphase?
During early anaphase (or Anaphase A) the chromatids abruptly separate and move towards the spindle poles. This is achieved by shortening of the spindle microtubules, and forces are mainly exerted at the kinetochores.
What happens early metaphase?
​Metaphase During metaphase, the nucleus dissolves and the cell’s chromosomes condense and move together, aligning in the center of the dividing cell. At this stage, the chromosomes are distinguishable when viewed through a microscope.
What happens late telophase?
Telophase results in two new nuclei in the same cell until the cell divides. The spindles that draw the chromosomes to each pole degenerate during late telophase. At the same time, nucleoli reappear amid the nuclear material.
What is a difference between the prophase in mitosis and prophase 1 in meiosis?
The homologous chromosomes pair together in prophase 1 of meiosis, but they do not throughout prophase 1 of mitosis. It is a short phase and is not divided into any subphase. Each duplicated chromosome appears as 2 sister chromatids joined simultaneously.
What happens in prophase 1 of meiosis How is this different from prophase of mitosis?
After prophase I, meiosis I proceeds to divide the contents of the cell. Unlike in mitosis, the sister chromosomes stay together through meiosis I, but the homologous chromosomes are separated. Each homologous chromosome carries different alleles for each gene.
What is early anaphase in mitosis?
Metaphase sets the stage for chromosome separation in the next stage of mitosis: anaphase. Almost immediately after the metaphase chromosomes are aligned at the metaphase plate, the two halves of each chromosome are pulled apart by the spindle apparatus and migrate to the opposite spindle poles.
What happens in early and late anaphase?
Early and late anaphase Within anaphase two distinct processes occur. During early anaphase (or Anaphase A) the chromatids abruptly separate and move towards the spindle poles. This is achieved by shortening of the spindle microtubules, and forces are mainly exerted at the kinetochores.
What happens in late anaphase?
Anaphase typically is a rapid process that lasts only a few minutes. When the chromosomes have completely migrated to the spindle poles, the kinetochore microtubules begin to disappear, although the polar microtubules continue to elongate.
What happens during late metaphase of mitosis?
What is the difference between early and late telophase?
The cell’s original nuclear membrane dissolved in an earlier phase of mitosis, allowing the two sets of chromosome pairs to migrate to the poles. Telophase results in two new nuclei in the same cell until the cell divides. The spindles that draw the chromosomes to each pole degenerate during late telophase.
What happens early telophase?
During telophase, a nuclear membrane forms around each set of chromosomes to separate the nuclear DNA from the cytoplasm. The chromosomes begin to uncoil, which makes them diffuse and less compact.
Which of the following occurs in the prophase of meiosis that also happens in the prophase of mitosis?
The correct answer is (c) synapsis and crossing over. 1. During prophase I of meiosis, synapsis and crossing over take place.
How do you distinguish early prophase from late prophase?
(1) The nuclear membrane or envelop has been broken down and nucleolus has disappeared.
What are the stages of prophase?
Prophase II
What are the Order of the phases in mitosis?
– The chromosomes start to condense (making them easier to pull apart later on). – The mitotic spindle begins to form. – The nucleolus (or nucleoli, plural), a part of the nucleus where ribosomes are made, disappears.
What is the difference between prophase and prometaphase?
Both prophase and metaphase are two phases of M phase of the cell cycle.