EVERYDAY SCIENCE

Detailed explanation-1: -Bivalent: In meiosis I, during the zygotene process, the stage chromosomes begin to pair together is called synapsis . Homologous chromosomes are chromosomes that are linked during the process of synapsis. The complex formed by the pairing of homologous chromosomes is known as bivalent.

Detailed explanation-2: -Bivalents are defined as connected homologous chromosomes, forming a unit of four DNA molecules, essential for the equilibrated segregation of the chromosome pool.

Detailed explanation-3: -Synapsed, paired homologous chromosomes are termed bivalent-indicating two joined or synapsed chromosomes-or tetrad-representing the four separate chromatids in the bivalent structure.

Detailed explanation-4: -The bivalent is also referred to as a tetrad. It is formed during the prophase I of meiosis. The formation of such tetrads helps in the segregation of chromosomes in the later stages of meiosis.

Detailed explanation-5: -In meiosis I, during prophase, the homologous chromosomes pair, and form synapses. The paired chromosomes are known as bivalent and consist of two chromosomes with two sister chromatids, thereby four sister chromatids of homologous chromosomes are linked together by charisma, thus forming a tetrad.