CELL STRUCTURES AND FUNCTION
CELL DIVISION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Prophase 1 of meiosis
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Prophase 2 of meiosis
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Prophase of mitosis
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All prophase stages in Mitosis and Meiosis
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Detailed explanation-1: -During zygotene, homologous chromosomes form tetrads by the process of synapsis (pairing of homologous chromosomes). Formation of synaptonemal complex is also seen during this stage.
Detailed explanation-2: -Tetrad formation occurs during the zygotene stage of meiotic prophase. It is a meiotic-specific process. Homologous chromosomes are DNA fragments within a diploid organism of the same size one from each parental source.
Detailed explanation-3: -In prophase I of meiosis, the homologous chromosomes form the tetrads.
Detailed explanation-4: -At the end of prophase I, the pairs are held together only at the chiasmata; they are called tetrads because the four sister chromatids of each pair of homologous chromosomes are now visible.
Detailed explanation-5: -During prophase I, the pairs of homologous chromosomes come together to form a tetrad or bivalent, which contains four chromatids. Recombination can occur between any two chromatids within this tetrad structure.