Genes and Lives

Peoples appearance (外貌)depends on the things called genes (基因).Genes are found in the cells(细胞)of peoples bodies,and they arepassed on from parents to children.Here are some facts abouteyes.Many Europeans and Am ericans canhave blue, green or brown eyes. But abrown-eyed person,for exam ple,m ay alsocarry genes for another colour in his or herbody. So tw o brow n-eyed or green-eyedparents m ay not have a child w ith thesam e eyes.Ifa child s father and m other both have brown eyes,the c…