We have an assignment at school where we have to investigate the periodic motion of a mass on a spring. The first task is the model a displacement vs time of the mass on spring but I know how to do that because we are using Datalogger.
Two divisions, and , are required to produce gametes (Figure 3). Meiosis I is a unique that occurs only in germ cells; meiosis II is similar to a mitotic division. Before germ cells enter meiosis, they are generally , meaning that they have two copies of each chromosome.
Genetic recombination happens in meiosis 1, specifically in prophase 1, when crossing over happens between the two inner chromatids of a synapsed pair of homologous chromosomes. 3. Replication of DNA happens BEFORE meiosis begins, so it doesn't happen in either meiosis 1 or meiosis 2. It happens during interphase.