The results of Meiosis I are two diploid cells with genetic differences on the chromosome. These differences are a result of crossing-over. Crossing-over is a process that happens after both homologous chromosomes in a pair join up to form a structure called a tetrad. Tetrads form through a process called synapsis.
A tide is the periodic rising and falling of Earth's ocean surface caused mainly by the gravitational pull of the Moon acting on the oceans. Tides cause changes in the depth of marine and estuarine (river mouth) waters. Tides also make oscillating currents known as tidal streams (~'rip tides'). This means that being able to predict the tide is important for coastal navigation.
8 Lacoste-Romberg GravimeterDrift Correction Fig. 20.3 Ocean tides are the result of the gravitational attraction of the moon and sun on the ocean. The tides formed by the moon are the lunar tides, and those formed by the sun are the solar tides. 9 Earth Tide CorrectionDrift and Tide CorrectionsRepeat Measurements.