Spindle fiber :d
In Prophase I of meiosis, a tetrad is formed between 2 homologous chromosomes and their replicates. Small pieces are exchanged between the chromosomes and the tetrad breaks up. Then things happen as usual. So really the only difference is that there's genetic recombination.
In prophase 1 the pair of homologous Chromosomes come together to form a tetravalent or bivalent, which contains four chromatids.
it forms like this along timeago the world was nothing but a big sea
DNA replicates and forms tetrad—APEX.
Coiled up DNA, combined with protein histone, forms chromosomes.
The answer is Spindle Fibers.
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.
spindle fiber
Spindle fibers
The spindle is formed during the prophase stage of mitosis or meiosis. In prophase, microtubules organize into a structure called the spindle apparatus, which helps separate the chromosomes during cell division.
the four parts of mitosis are prophase,metaphase, anaphase, and telophasein prophase, the nuclear envelope breaks down and a spindle forms between to centrioles. in metaphase,the chromosomes align along the equator of the cell.in anaphase, the chromatids (duplicated chromosomes) are seperated.in telophase,the two cells begin to pull apart, but with plant cells, a cell wall is built in between the two cells.
The DNA replicates itself and forms chromosomes to prepare for the breaking apart of the nuclear membrane.
telophase
One pair of homologous chromosomes. One chromosome in a tetrad is paternally inherited, while the other is maternally inherited. Each chromosome consists of two chromatids.
The phase of mitosis where the nuclear envelope and nucleus disappear is called prophase. During prophase, the chromatin condenses into discrete chromosomes, and the spindle apparatus begins to form, facilitating the movement of chromosomes during cell division.
In the very first step of mitosis, the prophase.
In Prophase I of meiosis, a tetrad is formed between 2 homologous chromosomes and their replicates. Small pieces are exchanged between the chromosomes and the tetrad breaks up. Then things happen as usual. So really the only difference is that there's genetic recombination.