Search
- https://bio.libretexts.org/Courses/San_Diego_State_University/BT@SDSU/02%3A_Resources_and_Reading_Materials/2.04%3A_Genetics_Agriculture_and_Biotechnology_(Suza_and_Lee)/2.4.10%3A_10_-_Genetic_PathwaysIn a regulatory pathway, some type of stimulus leads to a change in the expression or activity of a particular gene product, which in turn acts to alter the expression or activity of another gene prod...In a regulatory pathway, some type of stimulus leads to a change in the expression or activity of a particular gene product, which in turn acts to alter the expression or activity of another gene product or products, which in turn could regulate yet another level of activity.
- https://bio.libretexts.org/Courses/San_Diego_State_University/BT@SDSU/02%3A_Resources_and_Reading_Materials/2.04%3A_Genetics_Agriculture_and_Biotechnology_(Suza_and_Lee)/2.4.08%3A_Gene_Expression-_Applied_Example_(Part_2)This lesson describes how changes in the DNA sequence of a gene can alter the synthesis of a protein and thus influence traits such as herbicide resistance. In this lesson we will describe how ...This lesson describes how changes in the DNA sequence of a gene can alter the synthesis of a protein and thus influence traits such as herbicide resistance. In this lesson we will describe how changes in the gene can alter the gene expression process and influence traits in an organism. The specific example of ALS-inhibitor herbicide resistance is used to demonstrate the impact of genetic change on trait expression in a plant.
- https://bio.libretexts.org/Courses/Ohio_State_University/Ohio_State_University_SP22%3A_Molecular_Genetics_4606_(Chamberlin)/09%3A_Genetic_Pathways/9.01%3A_Genetic_PathwaysIn a regulatory pathway, some type of stimulus leads to a change in the expression or activity of a particular gene product, which in turn acts to alter the expression or activity of another gene prod...In a regulatory pathway, some type of stimulus leads to a change in the expression or activity of a particular gene product, which in turn acts to alter the expression or activity of another gene product or products, which in turn could regulate yet another level of activity.
- https://bio.libretexts.org/Courses/Ohio_State_University/Ohio_State_University_SP22%3A_Molecular_Genetics_4606_(Chamberlin)/02%3A_Mitosis_and_Meiosis/2.03%3A_Mitosis_and_MeiosisWhen the chromosomes arrive at the center of the cell at metaphase I, the two tetrads may be aligned so that the ‘E’ and ‘B’ genes move to one cell and the ‘e’ and ‘b’ genes move to the other during t...When the chromosomes arrive at the center of the cell at metaphase I, the two tetrads may be aligned so that the ‘E’ and ‘B’ genes move to one cell and the ‘e’ and ‘b’ genes move to the other during the first division. In the other half of the cells that go through meiosis, the tetrads will line up so that the ‘E’ genes will be passed on with the ‘b’ genes and the ‘e’ genes will go with the ‘B’ genes.
- https://bio.libretexts.org/Bookshelves/Genetics/Genetics_Agriculture_and_Biotechnology_(Suza_and_Lee)/01%3A_Chapters/1.11%3A_Recombinant_DNA_TechnologyRecombinant DNA (rDNA) technology has resulted in breakthroughs in crop and animal biotechnology. The power of rDNA technology comes from our ability to study and modify gene function by manipulating ...Recombinant DNA (rDNA) technology has resulted in breakthroughs in crop and animal biotechnology. The power of rDNA technology comes from our ability to study and modify gene function by manipulating genes and transform them into cells of plant and animals. To arrive at this several tools of molecular biology are used including, DNA isolation and analysis, molecular cloning, quantification of gene expression, and many others.
- https://bio.libretexts.org/Bookshelves/Genetics/Genetics_Agriculture_and_Biotechnology_(Suza_and_Lee)/01%3A_Chapters/1.05%3A_Gene_Expression-_TranscriptionOrganisms such as plants and animals have tens of thousands of genes. The impact that a single gene’s information can have on an organism, however, is tremendous. Furthermore, organisms have all their...Organisms such as plants and animals have tens of thousands of genes. The impact that a single gene’s information can have on an organism, however, is tremendous. Furthermore, organisms have all their genes in each of their cells, but they only need to use the information from a subset of these genes, depending on the type of cell and the cell’s stage of development. Therefore, the key to gene function is controlling its expression.
- https://bio.libretexts.org/Bookshelves/Genetics/Genetics_Agriculture_and_Biotechnology_(Suza_and_Lee)/01%3A_Chapters/1.07%3A_Gene_Expression-_Applied_Example_(Part_1)The promoter is the on/off switch of the gene, the coding region determines the amino acids sequence of the protein that will get made and the termination sequence signals where the gene information e...The promoter is the on/off switch of the gene, the coding region determines the amino acids sequence of the protein that will get made and the termination sequence signals where the gene information ends. In the case of our ALS protein, the assembly of all 667 amino acids into the polypeptide or protein chain in the correct order is important because the sequence of the amino acids determines how the protein folds.
- https://bio.libretexts.org/Courses/San_Diego_State_University/BT@SDSU/02%3A_Resources_and_Reading_Materials/2.04%3A_Genetics_Agriculture_and_Biotechnology_(Suza_and_Lee)/2.4.04%3A_PCR_and_Gel_ElectrophoresisThe polymerase chain reaction laboratory technique is used in a variety of applications to make copies of a specific DNA sequence. This lesson describes how a PCR reaction works, what it accomplishes,...The polymerase chain reaction laboratory technique is used in a variety of applications to make copies of a specific DNA sequence. This lesson describes how a PCR reaction works, what it accomplishes, and its basic requirements for success. Examples of interpreting results are given. PCR’s strengths, weaknesses, and applications to plant biotechnology are explained.
- https://bio.libretexts.org/Bookshelves/Genetics/Genetics_Agriculture_and_Biotechnology_(Suza_and_Lee)/01%3A_Chapters/1.14%3A_Deviations_from_Mendelian_Genetics-_Linkage_(Part_1)The same would be true of the white and shrunken alleles on the homologous chromosome in the F 1 . Therefore, we could explain the result by the hypothesis of linkage; a separate gene pair controls ea...The same would be true of the white and shrunken alleles on the homologous chromosome in the F 1 . Therefore, we could explain the result by the hypothesis of linkage; a separate gene pair controls each trait but these genes are located near each other on the same chromosome. Mathematically, we can say that the frequency of the shrunken, waxy seeds is the frequency of the sw gamete made in the male times the frequency of the sw gamete made in the female.
- https://bio.libretexts.org/Courses/San_Diego_State_University/BT@SDSU/02%3A_Resources_and_Reading_Materials/2.04%3A_Genetics_Agriculture_and_Biotechnology_(Suza_and_Lee)/2.4.15%3A_15_-_Deviations_from_Mendelian_Genetics-_Linkage_(Part_2)In this lesson you will learn to make predictions about inheritance using map unit distances and genetic markers, assemble maps from multiple-point linkage data, define the relationship between linkag...In this lesson you will learn to make predictions about inheritance using map unit distances and genetic markers, assemble maps from multiple-point linkage data, define the relationship between linkage maps, linkage groups and genome maps, and describe how DNA or molecular markers are observed and used in gene mapping.
- https://bio.libretexts.org/Courses/San_Diego_State_University/BT@SDSU/02%3A_Resources_and_Reading_Materials/2.04%3A_Genetics_Agriculture_and_Biotechnology_(Suza_and_Lee)/2.4.14%3A_14_-_Deviations_from_Mendelian_Genetics-_Linkage_(Part_1)The same would be true of the white and shrunken alleles on the homologous chromosome in the F 1 . Therefore, we could explain the result by the hypothesis of linkage; a separate gene pair controls ea...The same would be true of the white and shrunken alleles on the homologous chromosome in the F 1 . Therefore, we could explain the result by the hypothesis of linkage; a separate gene pair controls each trait but these genes are located near each other on the same chromosome. Mathematically, we can say that the frequency of the shrunken, waxy seeds is the frequency of the sw gamete made in the male times the frequency of the sw gamete made in the female.
