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Duplicated chromosomes first become visible during prophase.

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Phase if cell division when duplicated chromosomes first appear?

Prophase


What phase of cell divisions do duplicated chromosomes first appear?

prophase


Crossing over and the separation of duplicated homologous chromosomes in the first division produce genetic variation?

Crossing over during meiosis results in the exchange of genetic material between homologous chromosomes, creating new combinations of alleles. During the first division of meiosis, duplicated homologous chromosomes are separated, resulting in the formation of haploid cells with unique genetic content due to the random assortment of chromosomes.


What phase does chromosomes first appear to be double?

Chromosomes first appear to be double during the S phase of the cell cycle when DNA replication occurs. This results in two identical sister chromatids joined by a centromere in preparation for cell division.


What are they at the beginning of meiosis II?

At the beginning of meiosis II, the cells are already haploid following the first division (meiosis I). The chromatids have not yet duplicated, and the chromosomes are already in a condensed form.


Number of chromosomes in daughter cells formed by first division?

The number of chromosomes in daughter cells formed by the first division is the same as the parent cell, typically 46 chromosomes in humans. This is because during the first division, chromosomes are replicated and then distributed equally between the daughter cells.


How does the arrangement in chromosomes at meta phase differ in mitotic division and the first division?

In mitotic division, chromosomes are arranged individually in the middle of the cell at metaphase, whereas in the first division of meiosis, homologous chromosomes are paired together in the middle. This pairing of homologous chromosomes is known as synapsis and is unique to meiosis.


What happens in the first stage of the cell cycle in a eukaryotic cell?

In the first stage, called interphase, the cell grows and copies its organelles and chromosomes. After each chromosomes is duplicated, the two copies are called chromatids.


What stage are Chromosomes duplicated?

technically the chromosomes copy during interphase right before metaphase I of meiosis I so during Meiosis I the chromosomes are duplicated and not until metaphase II during meiosis II are the sister chromatids separated.


In the first division of meiosis that you just observed what happens to the number of chromosomes per cell?

In the first division of meiosis (meiosis I), the number of chromosomes per cell is reduced by half. This reduction occurs as homologous chromosomes separate, resulting in two daughter cells, each with half the number of chromosomes as the original parent cell.


What will separate in the first division in meiosis one?

Homologous chromosomes will separate in the first division of meiosis 1, moving to opposite poles of the cell in a process called disjunction. This results in the reduction of the chromosome number by half.


What is there two rounds of cell division?

Two rounds of cell division occur during meiosis, a process that produces gametes (sperm and eggs) for sexual reproduction. The first round, meiosis I, separates homologous chromosomes, resulting in two haploid cells with duplicated chromosomes. The second round, meiosis II, separates sister chromatids in those haploid cells, yielding a total of four genetically diverse haploid gametes. This reduction in chromosome number ensures that offspring have the correct number of chromosomes when gametes fuse during fertilization.