Answer:
Prophase 1
Explanation:
Prophase I :It can be divided into five stages:
1)Leplotene: In this stage, chromosome becomes visible and shorten as a single structure.
2)Zygotene: Homologous / sister chromosome pair up. This process is known as synapse. Synapse is the process of attachment of homologous /sister chromosome. One pair comes from the male parent while the other comes from the female parent.
3)Pachytene: Bivalents shorten.
4)Diplotene:Point of attachment of non-sister chromatids. The two chromosomes are seen to be joined at several points along their length. These points are known as Chiasmata.(Chiasmata, a cross). The paternal gene A, B, C may swap for the maternal gene a, b, c for instance, leading to a new gene combination in the resulting chromatids. This is referred to as *CROSSING OVER*.
5)Diakenesis: Homologous centromere move apart.
So, crossing over occurs in *Prophase 1.
1. Intensity.
2. Duration of shaking.
3. Nature of material upon which structure rests.
4. Nature of building materials and the construction practices of region.
<span>The hypothalamus serves as the regulator or controller of the autonomic nervous system in the brain. The hypothalamus is situated right above the brain stem and is vital for the regulation of many vital functions like respiration, cardiac functions etc.</span>
Can you give me some more info
