Read the following statements and choose the correct option: 1. During Zygotene stage the chromosomes start pairing together and this process of association is called synapsis. 2. The complex formed by a pair of synapsed homologous chromosomes is called a monovalent. 3. The first two stages of prophase I are relatively short-lived compared to the next stage that is Pachytene. 4. Bivalent are clearly visible in Pachyt

Step-by-step solution

During Zygotene stage chromosomes start pairing together and this process of association is called synapsis. The complex formed by a pair of synapsed homologous chromosomes is called a bivalent or a tetrad. The first two stages of prophase I are relatively short-lived compared to the next stage that is Pachytene.,During S phase, the amount of DNA per cell doubles. If the initial amount of DNA is denoted as 2C then it increases to 4C. However, there is no increase in the chromosome number.