What stage can you first see the chromosomes in mitosis?

Before mitosis starts you cannot see any chromosomes in the nucleus, however, all the DNA in the nucleus is replicated exactly. This stage is not a part of mitosis: it is called interphase (between divisions). Prophase: During prophase the chromosomes coil up.
A.

When can you see the chromosomes in a cell?

When cells are not dividing, you cannot see the chromosomes, and the nucleus looks like this photograph of a cell seen under the microscope where you can see the nuclear membrane surrounding a salmon pink area. At this stage, the chromosomes are not visible – just this mass of nuclear material called chromatin.
  • Do all organisms have 46 chromosomes?

    Chromosomes vary in number and shape among living things. Most bacteria have one or two circular chromosomes. Humans, along with other animals and plants, have linear chromosomes that are arranged in pairs within the nucleus of the cell.
  • How many chromosomes are in a human body?

    In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females.
  • What are the chromosomes called following this duplication?

    The two chromatids of a duplicated chromosome are held together at a region of DNA called the centromere (see figure below). Centromeres are the attachment points for microtubules, which are responsible for the guiding the movement of chromosomes during mitosis and meiosis.
B.

When the chromosomes are visible?

During interphase (1), chromatin is in its least condensed state and appears loosely distributed throughout the nucleus. Chromatin condensation begins during prophase (2) and chromosomes become visible. Chromosomes remain condensed throughout the various stages of mitosis (2-5).
  • When chromosomes are not visible?

    During interphase (1), chromatin is in its least condensed state and appears loosely distributed throughout the nucleus. Chromatin condensation begins during prophase (2) and chromosomes become visible. Chromosomes remain condensed throughout the various stages of mitosis (2-5).
  • Do all organisms have 46 chromosomes?

    Chromosomes vary in number and shape among living things. Most bacteria have one or two circular chromosomes. Humans, along with other animals and plants, have linear chromosomes that are arranged in pairs within the nucleus of the cell.
  • How chromosomes are formed?

    In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
C.

What phase of mitosis do the chromosomes become visible?

Chromosomes become visible during prophase. Prior to that, the chromosomes were long strands of DNA material called 'chromatin'. During Prophase, the chromatin curls up into tightly wound shapes called chromosomes.
  • What stage do chromosomes replicate?

    During the S phase the cell replicates the chromosomes by taking one chromatid and effectively doubling it (these are later ripped apart during Anaphase in Mitosis). So during the S phase of the Interphase cycle, chromosomes are replicated into two sister chromatids.
  • What stage do the chromosomes line up in the middle of the cell?

    Together, the spindle fibers from either centriole guide the chromosome to the center of the mitotic spindle. This stage of mitosis is called metaphase and the arrangement of chromosomes lined up in the center of the mitotic spindle is referred to as the metaphase plate.
  • When chromosomes become visible at the beginning of cell division what do they consist of?

    When chromosomes become visible at the beginning of cell division, what does each chromosome consist of? Each chromosome consists of two identical sister chromatids. 3. Each pair of chromatids is attached at an area called the .

Updated: 23rd September 2018

Rate This Answer

4 / 5 based on 2 votes.