Problem 46) achondroplasia is the most common mendelian form of genetic dwarfism and is inherited as an autosomal dominant disorder. it has been found that new achondroplasia mutations are usually inherited from the father, particularly older fathers. why might new mutations arise in older males?

When new rock is added to an oceanic ridge, the magnetized strips on either side of the ridge are evidence of sea-floor spreading. this is because the rocks on the two sides of the ridge o are equal in width and in polarity are polar opposites oare magnetized vary in width but are equal in polarity