Best Answer: Crossing-over is another name for recombination or physical exchange of equal pieces of adjacent non-sister chromatids. When crossing-over occurs chromatids break and may be reattached to a different homologous chromosome. This occurs during Meiosis 1 / Prophase 1. Synapsis occurs when homologous chromosomes form tetrads and crossing-over or recombination takes place.
The best time to apply castor oil is at night, preferably couple of hours before bed time. While it is perfectly fine to use them during day time, there is a big advantage in applying them at night as this allows more time to saturate and start the process which aids in growing eyelashes.
Why? Castor oil, a very pale yellow liquid extracted from the castor seeds of Ricinus Communis, is one of the most useful plant oils. Castor oil comes in different grades and is used as food additives, in cosmetics, in flavorings, as a mold inhibitor and in pharmaceuticals.Castor oil has a long history of medicinal uses both internally and externally, treating conditions ranging from arthritis to genital warts.f youâre thinking of using castor oil to bring back the glory, hereâs how: Since castor oil can be thick, dilute it with lighter oil like sweet almond oil or avocado oil. Apply to scalp, rub it in gently and wrap your hair with a plastic cap or towel.