Answer: B) Compounds contain two or more elements
Explanation:
Well all animals are known for their characteristics so are placed in specific groups that match with their characteristics. Hope this helped :)
A chromosome consists of a single, double-stranded DNA molecule. Chromatids are two molecules of double-stranded DNA joined together in the center by a centromere. Chromosomes have a thin ribbon-like structure. Chromatids have a thin and long fibrous structure.
A quadrant streak is the answer