A tetrad is a composition of four chromatids that are formed after synapsis occurs during the prophase I stage of meiosis I. Each of the tetrads contains two chromosomes, known as a homologous chromosome pair, with two c... More »

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Chromosomes form tetrads during the prophase I phase of meiosis, according to Biology Online. Tetrads occur when synapsis within the cell causes four chromatids to form as part of a homologous pair of chromosomes. More »

Tetrads, four-part structures made up of two homologous chromosomes, form during prophase I of meiosis. During this phase, chromosomes exchange genetic material with other chromosomes in the tetrad. The process is referr... More »

Tetrads, also known as bivalents, form during the prophase 1 stage of meiosis when duplicated chromosomes, each composed of two identical chromatids, pair up and complete the process of crossing over in which one chromos... More »

Both mitosis and meiosis are types of cell division that share many similarities, and both share the same basic stages of prophase, metaphase, anaphase and telophase, according to the University of Illinois at Chicago. B... More »

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The main events of meiosis include prophase, metaphase, anaphase and telophase. A cell in meiosis goes through two divisions, meiosis I and meiosis II, in which each division consists of the same stages to produce gamete... More »

In the anaphase II stage of meiosis, the sister chromatids are separated and begin moving to opposite poles of the cell, according to About.com. When the paired sister chromatids are fully separate, then each is consider... More »