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What is the relationship between genotype and phenotype?
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| Submitted: Mon Dec 22 2003
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Alice Helliwell What is the relationship between genotype and phenotype? Illustrate with a particular example of a genetic disease or disorder. Nearly all human cells (with the exception of red blood cells) contain DNA- deoxyribonucleic acid; complex right handed double helix polynucleotides, immortal hereditary molecules capable of semi-conservative self-replication, which enables it to pass its information from one generation of cells to the next. The famous physicist, Erwin Schiroger claimed that it was these tightly coiled molecules that truly hold the key to the nature of life- that there genes made life possible. Yet what are these infamous genes that seem to dominate contemporary genetic research and how are they related to the phenotype or physical attributes of an organism? A gene can be considered as a unit of hereditary information; a length of DNA which codes for the production of a polypeptide molecule. Together with introns, it is the linear...
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