Helena Curtis and N. Sue Barnes. Biology. Worth Publishers, Inc., New York, 5th edition, 1989.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....the next level, but whose analogy to GAs we will save for future work. For now, we will focus only on the analogy to simple gene expression. There are clear examples in biology which indicate that the existence of a gene allows it to produce a required protein regardless of its location. Curtis [6] gives an example where a genetic defect (deletion) is masked by an extra copy of the missing gene on a different chromosome. The defect is expressed in the offspring which do not have an extra copy of the missing gene, possibly due to receiving that part of the chromosome from the other parent. ....

H. Curtis. Biology. Worth Publishers, 1983.

....the next level, but whose analogy to GAs we will save for future work. For now, we will focus only on the analogy to simple gene expression. There are clear examples in biology which indicate that the existence of a gene allows it to produce a required protein regardless of its location. Curtis [6] gives an example where a genetic defect (deletion) is masked by an extra copy of the missing gene on a different chromosome. The defect is expressed in the offspring which do not have an extra copy of the missing gene, possibly due to receiving that part of the chromosome from the other parent. ....

H. Curtis. Biology. Worth Publishers, 1983.

....Exon2 Intron1 Intron2 Exon3 Exon1 Exon2 Fig. 6. Non coding DNA: intragenic regions and introns. ribosome attaches each new amino acid to the growing polypeptide chain. When the end of the mRNA chain is reached, the ribosome separates from the mRNA and releases a complete polypeptide chain. [4] [22] 35] 36] 3 Non coding DNA The term non coding DNA refers to all DNA that is not involved in the coding of a mature RNA product. Though non coding DNA is prevalent in biological systems, its origin and function are as yet uncertain. Because a great deal of extra energy is required to ....

H. Curtis. Biology. Worth Publishers, 1983.

....mRNA template is called translation. A genotype is the genetic constitution of an organism. A phenotype is the appearance or other characteristics of an organism, resulting from the interaction of its genotype with the environment. A gene that is expressed makes some contribution to the phenotype (Curtis, 1983) (Lewin, 1994) There are several types of non coding DNA (Nei, 1987) Intergenic regions and intragenic regions (introns) make up a large part of the non coding DNA. Intergenic regions are found between genes and are not transcribed into mRNA. Some portions of the intergenic regions regulate the ....

Curtis, H. (1983). Biology. Worth Publishers.

....as protein or DNA. It has been known that DNA acts like a biological computer program with some 3 billion bits long that spells out the instructions for making proteins, the basic building blocks of life. A protein is a 3D molecular structure constructed by hundreds or thousands of amino acids [20]. A simple protein example is shown in Figure 2.1. Each amino acid is represented by a dot in the example. The most popular representation model for biologists to describe a protein is to use the sequence [20] A protein is represented as a sequence made from 20 amino acids, each represented as a ....

....A protein is a 3D molecular structure constructed by hundreds or thousands of amino acids [20] A simple protein example is shown in Figure 2.1. Each amino acid is represented by a dot in the example. The most popular representation model for biologists to describe a protein is to use the sequence [20]. A protein is represented as a sequence made from 20 amino acids, each represented as a letter. Figure 2.2 shows a protein sequence with 922 amino acids. A DNA (deoxyribonucleic acid) is a twisted double helix structure [45] An example is shown in Figure 2.3. Each strand of the DNA double helix ....

H. Curtis, Biology, Worth Publishers, New York, 1975.

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Helena Curtis and N. Sue Barnes. Biology. Worth Publishers, Inc., New York, 5th edition, 1989.

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Helena Curtis. Biology. Worth Publishers, New York, fourth edition, 1983.

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