Prokaryotes and eukaryotes package their DNA molecules with protein in structures called chromosomes. A prokaryotic chromosome is circular and resides in a cell region called the nucleoid.
Through the umbilical vein.
Answer:
chemical reactions.
Explanation:
Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions.
a complete map of all potential genes a map disease-linked genes a genetic map of the 23 human chromosomes a list of all the genetic base pairs