Cooking tips for tender beef. When cooking beef, keeping it tender and juicy is of utmost importance - and it really isn't that difficult. With the following cooking tips, you'll have perfectly cooked beef every time. Cooking tip #1: Understand your cuts.
Supplement. In cell biology, a tetrad pertains to the structure formed by the synapsis of homologous chromosomes during the prophase I of meiosis. Word origin: Greek tetras, tetrad-. Synonym: bivalent. Related term: 1  Fallots tetrad.
1. Chromosomes become visible 2. Nuclear membrane and nucleolus disappear 3. Spindle fibers become visible 4. Homologous chromosomes pair up next to one another (synapsis). The 4 chromatids are now called a tetrad. 5. Crossing over may occur.