Characteristic features of Achondroplasia include short arms and legs with particularly short upper arms and thighs, limited range of motion at the elbows, and an enlarged head with a prominent forehead. Fingers are typically short and the ring finger and middle finger may diverge, giving the hand a three-pronged appearance. People with achondroplasia are generally of normal intelligence.
Most dwarfism-related conditions are genetic disorders, but the causes of some disorders are unknown. Most occurrences of dwarfism result from a random genetic mutation in either the father's sperm or the mother's egg rather than from either parent's complete genetic makeupSome of the possible genotypes for the parents of a child with dwarfism is a RR mother, and a RR father, then 100 percent of their children will have dwarfism. If a both of the parents are Rr then 75 percent of their children will have dwarfism
by Chloe A. Nelson
biology hour 3
march 1 20017