Isaiah has inherited the best qualities from each of his parents. Isaiah's knack for fixing things coupled with an artistic eye may open up a future that is beautiful and bright.
Isaiah's SimDNA shows that he carries the recessive allele for blonde hair. He also has the dominant skin tone range for light skin, meaning he was likely created using the Create-A-Child feature in Create-A-Family, which is supported by his facial features.
While Isaiah's mother is homozygous for green eyes, Isaiah himself is homozygous for dark blue eyes. When viewing his character data in SimPE, it can be seen that he doesn't have a gender preference at the start of the game. This is also the case of the Newson siblings.