What is autosomal dominant and recessive inheritance?

Offspring inherit 2 copies of each gene, one from each biological parent. If a condition or disease is autosomal dominant, this means that the offspring only needs to inherit one copy of the gene to have the condition or disease.Autosomal recessive conditions require 2 copies of the gene to be inherited in order to have the condition or disease. If the offspring inherits one 'normal' and one 'faulty' gene, they would be a carrier. It may be easier to demonstrate this using a Punnett square.