Chromosome Structure, Composition & Location

Structure of chromosomes revealed

Chromosomes: The Gene Carriers of a Cell

X Chromosome

Chromosome

Scientists Completely Map the Human Y Chromosome for the First Time

Family shares their journey through Chromosome 18 abnormality

Human Karyotype Overview, Disorders & Examples

SOLVED:Comparatively few human genetic disorders are caused by chromosomal abnormalities. One reason is that a. most chromosomal abnormalities have little effect. b. it is difficult to detect changes in the number or length of chromosomes. c. most chromosomal abnormalities result in spontaneous abortion of the embryo. d. it is not possible to change the length or number of chromosomes.