The study of chromosomes and chromosome abnormalities is encompassed in the branch of cytogenetics. A chromosomal abnormality arises due to a structural abnormality in one or more chromosomes or due to occurrence of atypical number of chromosomes. Structural abnormalities in chromosomes can lead to deletions, duplications, inversions, insertions, translocations, etc. in chromosomes. Some of the disorders arising due to this include Jacobsen syndrome, Wolf-Hirschhorn syndrome, Charcot-Marie-Tooth disease type 1A, etc. Numerical disorders include Down syndrome, Turner syndrome, etc. Some chromos Cytogenetics - Clayton Fisher od authora Clayton Fisher a nakladatelství za skvělé ceny na e-shopu Martinus. cz.