Figure 4. During mitosis, chromosomes become attached to the structure known as the mitotic spindle. In the late 1800s, Theodor Boveri created the earliest detailed drawings of the spindle based on his observations of cell division in early Ascaris embryos (Figure 4; Satzinger, 2008).
Nigella seeds are also known as black onion seeds, a misnomer as the seeds have nothing to do with onions. Nigella seeds are the dried, seed-like fruit of a small herb. The seeds are long and jet black with a matte finish.They closely resemble tiny chips of coal.Nigella seeds are sold whole and can be dry roasted and powdered at home.Nigella seeds are sometimes erroneously referred to as black cumin, an entirely different species. Nigella seeds are used in India and the Middle East as a seasoning for vegetables, legumes, salads and breads.igella seeds are sold whole and can be dry roasted and powdered at home. Nigella seeds are sometimes erroneously referred to as black cumin, an entirely different species. Nigella seeds are used in India and the Middle East as a seasoning for vegetables, legumes, salads and breads.
Nigella sativa and its black seed are known by other names, varying between places. some call it black caraway, habbat al barakah , and habbat sawda , others call it black cumin (kalounji), onion seeds or even coriander seeds. in English, the nigella sativa plant is commonly referred to as black cumin .