<span>The seeds collected from the first generation monohybrids are called F1. The first generation is called P generation or parental generation. The seeds collected from the first generation (P generation) is called F1 generation or the first filial generation. The seeds collected from the second generation (F1 generation) is called F2 generation or the second filial generation.</span>
Van der Waals interactions may result when electrons are not symmetrically distributed in a molecule. Van der Waals forces, in physical chemistry are essentially
associated with the name of a Dutch researcher Johannes Diderik van der Waals
and indicate the separation of dependent interactions among particles and
atoms.
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Ans.
Neural crest cells are embryonic cells that are unique to organisms of phylum chordata. These cells give arise a number of cell lineage, such as bone and cartilage, melanocytes, smooth muscle, glia and neurons, eyes, teeth, and other sense organs. The neural crest cells do not form pharyngeal slits in invertebrate chordates.
Thus, the correct answer is option b).
