A concise explanation of the luxury gene? What is the luxury gene

1 The double spiral structure explains many genetic phenomena, such as the material basis of separation and free combination.

2 The bispiral structure explains the material basis of many variations, such as genetic mutations.

3. The bispiral structure promoted the progress of genetic theory, such as the theory of the central law and the synthesis of proteins, which was the most fundamental basis of many new theories later.

4. The double-screw structure is the theoretical basis for the application of biotechnology such as genetic engineering.

5 For today's human health, genetic medical examination is also the most fundamental theoretical basis.

In short, the double-screw structure occupies an important position in the life sciences both theoretically and practically, and is a milestone theory in the development of the history of life sciences.

Luxury gene: A gene that is expressed in large quantities (usually) and encodes a special functional product in a particular cell type.

The genes used by the same somatic cell with the same genetic information are not the same, some gene activities are necessary to maintain the basic metabolism of cells, and some genes are active in some differentiated cells, which is the basis of cell differentiation and biological development.

Numerous experiments, such as molecular hybridization, have shown that only a few genes (510) are expressed in the full set of genomes of cells. The genes expressed in the genome are divided into two categories: one is necessary to maintain the basic life activities of the cell, called house keeping genes, such as various histone genes.

The other type is genes that guide the synthesis of tissue-specific proteins, which have an important impact on differentiation, called luxury genes, that is, genes expressed in tissue-specific genes, such as keratin genes in the epidermis, actin genes and myosin genes in muscle cells, hemoglobin genes in red blood cells, etc. This type of gene is directly related to the particularity of various types of cells, and is a gene that is selectively expressed in various tissues.

Household genes are indispensable for maintaining cell survival, luxury genes are related to cell differentiation, are tissue-specific expression related genes, maintain a non-methylated or hypomethylated state in specific tissues, and are methylated in other tissues. Almost all methylation occurs at the dinucleoside sequence5'-cg-3'c. Makes cytosine 5'- Methylcytosine.

And the sequence that contains this methylated CG corresponds to the facultative heterochromatin region on the chromosome.

Housekeeping genes are expressed in all cells in a constitutive manner, while luxury genes are expressed in specific groups of cells. The specific expression of these genes determines the development, differentiation, cell cycle regulation, homeostasis, cell senescence, and even programmed death of cells in the life course. The study of genes or gene expression in different types of cells at different stages of differentiation can obtain information about the entire life process of the cell.

Genes will also be selectively expressed when the metabolic process of cells changes and even lesions under the action of different natural or artificial physical and chemical factors.

Luxury genes (tissue-specific genes) refer to genes that are specifically expressed in different types of cells, and the products of luxury genes give specific morphological and structural characteristics and functions to various types of cells.

In higher organisms, luxury genes are selectively expressed, so it is only expressed within specific cells. (For example, the hemoglobin gene is only expressed in blood cells, so the hemoglobin gene is a luxury gene.) ）

Luxury genes: genes that are expressed only in specific types of cells. Such as hemoglobin.

Genes, growth hormone.

Gene. Essential genes (housekeeping genes.

Genes necessary to maintain the basic life activities of cells. Such as respiratory enzyme genes.

Both are necessary for the life activities of living organisms. But essential genes are necessary for the maintenance of the basic metabolism of cells and are expressed in all cells. Luxury genes are only selectively expressed in some differentiated cells.

The genes that can control your inner sense of luxury, hee-hee, good understanding. Hey.

It's like money has but it's not being used.

Each cell expresses a different gene, i.e., a subset of genes that are selectively expressed.

Luxury gene: tissue-specific genes refer to genes that are specifically expressed in different types of cells, and their products give specific morphological and structural characteristics and functions to various types of cells.