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prophase
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Name the phase of cell division when duplicated chromosomes first appear?
The phase of cell division when duplicated chromosomes first appear is called the prophase. In prophase, the chromatin condenses into visible chromosomes, and the nuclear envelope breaks down, allowing the chromosomes to be more clearly visible.
Phase if cell division when 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 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 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 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.
What must occur before mitosis takes place?
The chromosomes must be duplicated. the real answer: DNA replicates and forms tetrads
How many divisions will a cell with 16 chromosomes have during meiosis?
Even if there was that kind of sex cell, I don't think it would survive! Sex cells ALWAYS have 46 chromosomes. At the end of meiosis, as long as there are no mistakes, each sperm or egg cell would have 23 chromosomes.
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.
Can a man and a dog successfully conceive?
Human and Dog chromosomes do not match up. the egg would be fertilized but then DIE after the first couple of cell divisions. That's what makes it appealing to some.
Who duplicated Ferdinand Magellan's voyage first?
Sir Francis Drake
What is the number of cell division in meiosis?
2 Cell divisions. The first, meiosis I, separates the homologous chromosomes after allowing for crossing over. The second, meiosis II, separates each chromosome by splitting them by their telomeres!
