An accepted theory that chromosomes are the material of inheritance, and that they are associated in paternal-maternal pairings; dervied from the collective work of Boveri, Sutton, and Morgan.

The cell's nucleus contains chromosomes. These are long threads of DNA, which are made up of many genes. Humans have around 25,000 genes across their 23 pairs of chromosomes.

Thomas Hunt Morgan (shown) discovers a white-eyed mutant in his laboratory fruit flies. His continuing work would confirm that genes, the units of heredity, are located on chromosomes.

Where are these genes found, and how does this non-nuclear inheritance occur? But why is leaf color in Mirabilis determined by only one parent—in this case, the maternal parent? The answer to ...

Each gene might have different forms, and these are called alleles. The diagram shows the relationship between the cell, its nucleus, chromosomes in the nucleus, and genes.

A new study published in Nature Genetics by the Lymphoid Development Group at the MRC Laboratory of Medical Sciences has ...

Chromosomes are located in the nucleus of a cell and can be seen through a microscope ... Many members have been affected generation after generation. The inheritance is not straightforward. Familial ...

The Madeira mice suggest that fusion chromosomes can also drive unequal inheritance. Because Rb fusions are easy to identify morphologically, and because mouse oocytes are an established model system, ...