A. In prophase I, tetrads of homologous chromosomes form and crossing over occurs
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There are three things.... The margins of the drifting continents, the existence of matching rock types and formations and the presence of similar fossils on opposing edges!
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In vitamin k. The most widely recognized reasons for vitamin K lack are a deficient dietary admission, insufficient retention, and diminished stockpiling of the vitamin because of liver infection, yet it might likewise be caused by diminished generation in the digestion tracts.
A vitamin K lack in grown-ups can prompt coronary illness, debilitated bones, tooth rot, and tumor. A notice indication of a vitamin K inadequacy is draining and wounding effectively. This draining can start as an overflowing from the gums or nose.
1. B (cytoplasm)
2. D (chloroplast)
3. A (protein)
