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 is a genus of about 14 species of annual plants in the family Ranunculaceae, native to southern Europe, north Africa, south and southwest Asia. Common names applied to members of this genus are nigella, devil-in-a-bush or love-in-a-mist.The species grow to 20â90 cm tall, with finely divided leaves; the leaf segments are narrowly linear to threadlike. The flowers are white, yellow, pink, pale blue or pale purple, with five to 10 petals.ommon names applied to members of this genus are nigella, devil-in-a-bush or love-in-a-mist. The species grow to 20â90 cm tall, with finely divided leaves; the leaf segments are narrowly linear to threadlike. The flowers are white, yellow, pink, pale blue or pale purple, with five to 10 petals.