Each chromosome contains about 1000 genes. There is enough DNA in all the cells in a human body to stretch to the sun and back again over 60 times. Humans inherit 23 of their chromosomes from ...

Each cell with a nucleus contains chromosomes, which are made from DNA Human body cells each contain 23 pairs of chromosomes, half of which are from each parent. So, human gametes (eggs and sperm ...

14, No. 2 (Feb., 1927), pp. 53-75 (26 pages) 1. The diploid number of chromosomes for all strains of Zea Mays studied, with the exception of Black Mexican sweet corn, is 20. 2. In one plant of Black ...