Genes© Copyright NewPath Learning. All Rights Reserved. 94-4788Visit www.newpathlearning.com for Online Learning Resources.AAAACCCCGGGGTTTTFunction of a GeneEach gene along a strand of DNA has the information to protein. A gene is made up of a particular sequence of DNA bases. This sequence acts as a code for a protein. What Is a Trait?The production of different proteins determines the traits of an organism. A trait is an inherited characteristic. Genes that exist in alternate forms are called alleles. The gene that determines earlobe shape exists in two alleles – one results in an attached earlobe and the other a free earlobe. aBcDeFGhiJabCdEfgHIjABcDeFGhiJAbCdEfgHIjfreeattachedallelesMultiple AllelesSome genes have more than two, or multiple alleles. The human ABO blood group gene has three alleles that can combine into four types of blood groups. Human Blood GroupsBlood GroupGenotype(alleles - IA,IB,i)Blood GroupGenotype(alleles - IA,IB,i)ABABOIAIA or IAiIBIB or IBiIAIBiiDNAproteinfreeallelesattachedearlobe shapegeneAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACCCCCCCCCCCCCCCCCCCCCCCCCCCCGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTEach gene along a strand of DNA has the information to protein. A gene is made up of a particular sequence of DNA bases. This sequence acts as a codefor a protein. The production of different proteins determineeeeeeeeeessssssssssss the traits of an organism. A trait is an inheritttteeeeeeeeeeddddddddddddddd characteristic. Genes that exist in alternate forms are caaaaaaaaaalllllllllllllllllllllllllllleeeeeeeeeeeeddddddddddddddddddd alleles. The gene that determines earlobbbbbbbbbbbbbbbeeeeeeeeeee shape exists in two alleles – onnnnnnneeeeeeeeeeeeeeeeeeee reeeeeeeeeeeeessssssssssssssuuuuuuuuuuuuuuuuuulllllllllllttts in an attached earlobe and the oooooooootttttttttttthhhhhhhhhhhhhhhhhhhhheeeeeeeeeeeeeerrrrrr a free earlobe. aBaBDcDceFeFGGhhiiJJababdCdCEfEfHgHgIjIjABABDcDceFeFGGhhiiJJAbAbdCdCEfEfHgHgIjIjchedSome genes have more than two, or multiple alleles. Thehuman ABO blood group gene has three alleles that can combine into four types of blood groups. B BBA BAAAAAA AAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBllllllllllloooooooooooooooooddddddddddddddd GGGGGGGGGGGGGGGGGGGGGGGGGrrrrrrrrrrrrrrrrroooooooooooooouuuuuuuuupppppppppppppppppppGGGGGGGGGGGGGGGGGeeeeeeeeeeeeeeennnnnnnnnnnnnnnnooooooooooooooootttttttyype(((((((((allellllllleeeeeeeeeeesssssssssssss --- AAAAAAAAAAAAAAAAAA,, B,,,,,,i)BBBBBBBBBBBBBBloooooooooooooooddddddddddddddddd GroupGenotype(alleles - A, B,i)DDDDDDDDDDDDDDDDNNNNNNNNNNNAAAAAAAAAAAAAAAAAproteinfreeallelesattttttttttttaaaaaaaaaaaccccccccccccccchhhhhhhhhhhhhedeaaaaaaaaarrrrrrrrrrrrrlllllllllllooooooooooobbbbbbbbbbbbbbeeeeeeeeeee shappeeeeeeeeeeegggggggggggggeeeeeeennnnnnnnnnnnnneeeeeeeeeeeeeee
< Page 4 | Page 6 >