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Formation of chiasmata during crossing over
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Part of the cell that holds the chromosomes?
part of cell that contains the chromosomes
Doubled chromosomes first become visile in which step of mitosis?
double chromosomes first become visible in which step of mitosis?
Why are chromosomes called doubles chromosomes just before mitosis begins?
Amount of DNA that has been doubled
In what stage of mitosis do the centromeres hold the doubled chromosomes together?
Prophase
What is the first stage of mitosis where the chromosomes become shortened and doubled?
Prophase
What cell part is doubled or duplicated or copied at the end of interphase?
The chromosomes are copied.
What structure in a cell nucleus holds hereditary information?
chromosomes
In mitosis or meiosis do doubled chromosomes pair to form tetrads?
In meiosis, doubled chromosomes (homologous pairs) pair to form tetrads during prophase I. This allows for genetic recombination to occur between homologous chromosomes. In mitosis, chromosomes do not pair to form tetrads as there is no crossing over between homologous chromosomes.
Why is it necessary for meiosis to produce cell with half the number of chromosomes?
To conserve the chromosomal number. Otherwise it will doubled
How does tetrad form in prophase I of meiosis?
In prophase I, doubled homologous chromosomes group together to form a tetrad.
What is the doubled rod of condenced chromatin?
the answer is CHROMOSOME your very welcome
What doubled chromosomes are first pulled apart?
The doubled chromosomes that are first pulled apart during cell division are the sister chromatids. These chromatids are identical copies of a chromosome formed during DNA replication. During mitosis, specifically in anaphase, the sister chromatids are separated and pulled toward opposite poles of the cell, ensuring that each daughter cell receives an identical set of chromosomes.
