From there the Missouri flows east and southeast, ultimately joining the Mississippi River about 10 miles (16 kilometers) north of St. Louis, Missouri. The Missouri River flows through Montana, North Dakota, South Dakota, Nebraska, Iowa, Kansas, and Missouri.
Chromosome theory of inheritance. generalization that genes are located on chromosomes and that the behavior of chromosomes during meiosis and fertilization accounts for inheritance patterns, also states that mendelian genes have specific loci, chromosomes undergo segregation and independent assortment.
Human beings have about 25,000 genes. Researchers have discovered what some of our genes do and have found some that are associated with disorders (such as cystic fibrosis or Huntingtonâs disease). There are, though, many genes whose functions are still unknown.