The total complement of genes in an organism or cell is known as its genome, which may be stored on one or more chromosomes. A chromosome consists of a single, very long DNA helix on which thousands of genes are encoded.:4.2 The region of the chromosome at which a particular gene is located is called its locus. Each locus contains one allele of a gene; however, members of a population may have different alleles at the locus, each with a slightly different gene sequence. COUNT 5
QSN1 What is the total complement of genes in an organism or cell known as? ANS1 its genome QSN2 What does a chromosome consist of? ANS2 a single, very long DNA helix QSN3 What is encoded on a chromosome? ANS3 thousands of genes QSN4 What is the region of the chromosome at which a particular gene is located called? ANS4 its locus QSN5 What does each locus contain? ANS5 one allele of a gene