What is gene expression variation?
Genetic variation in a protein such as a transcription factor that controls the expression of multiple genes is likely to have an influence on all or most of its target genes. Correlated variation in groups of, as well as individual genes, may have significant phenotypic consequences.
What does it mean to insert a transgene into a plant?
Introduction. Transgenic plants are plants that have had their genomes modified through genetic engineering techniques either by the addition of a foreign gene or removal of a certain detrimental gene [1]. A foreign gene inserted into a plant can be of a different species or even kingdom.
What is gene expression in plants?
Gene expression regulation relies on a variety of molecular mechanisms affecting different steps of a messenger RNA (mRNA) life: transcription, processing, splicing, alternative splicing, transport, translation, storage and decay. Light induces massive reprogramming of gene expression in plants.
What is used to restrict the transgene expression?
Q5: What is used to restrict transgene expression? Explanation: In both animals and plants, cell or tissue specific promoters are used to restrict transgene expression to certain areas of the organism.
What is acquired variation?
An acquired characteristic is a non-heritable change in a function or structure of a living organism caused after birth by disease, injury, accident, deliberate modification, variation, repeated use, disuse, misuse, or other environmental influence.
What are some examples of human variation?
Common human variations
| Type of Variation | Example |
|---|---|
| Skin Color | Human skin color Albinism |
| Eye Color | Eye color Martin scale |
| Hair Color | Human hair color Hair coloring |
| Hair Quantity | Hair loss Hirsutism |
What are transgenic plants give examples?
Explanation: Examples of transgenic plants: (i) Bt cotton (ii) Flavr savr tomato and (iii) Golden rice. (i) Bt Cotton : Bt cotton is a transgenic plant. Bt toxin gene has been cloned and introduced in many plants to provide resistance to insects without the need of insecticides.
How do plants regulate gene expression?
Plant gene expression, in response to stress cues, is tightly controlled by transcriptional regulators. Posttranslational modifications are a key mechanism to control the activities of transcription factors (TFs). In this context, the redox regulation of TF function is emerging as an important theme.
How is gene expression determined in plants?
Gene expression level is calculated for a gene by averaging the intensity values in all tissues. Gene expression breadth is measured as the number of tissues in which a gene is expressed.
What is transgenic expression?
A transgene is an artificial gene, manipulated in the molecular biology lab that incorporate all appropriate elements critical for gene expression generally derived from a different species, for example, production of α1-proteinase inhibitor protein in transgenic sheep carrying transgene of human origin.
What are some examples of transgenic organisms?
Transgenic organisms have also been developed for commercial purposes. Perhaps the most famous examples are food crops like soy and corn that have been genetically modified for pest and herbicide resistance. These crops are widely known as “GMOs” (genetically modified organisms).