Does the nucleus have genetic material and what is the genetic material in the nucleus called

Absolutely. There are chromosomes in the nucleus, and there is DNA on the chromosomes, and DNA is the genetic material.

The genetic material in the nucleus is called the chromosome, the chromosome is the product of the highly helical socking of chromatin, and the chromatin is composed of DNA and protein, and experiments have proved that the protein does not have a genetic effect, and the DNA is the genetic material.

Nucleus is the largest and most important cell structure in eukaryotic cells, and it is also the regulatory center of cytogenetics and metabolism, and it is also one of the most significant markers that distinguish eukaryotic cells from prokaryotic cells (very few eukaryotic cells have no nucleus of cells, such as mammalian mature red blood cells, higher plant mature sieve cells, etc.).

Both eukaryotic and prokaryotic cells use DNA as their genetic material, and prokaryotic cells have both DNA and RNA. With the exception of some viruses, the genetic material of the rest of the viruses and all organisms with typical cellular structures is DNA.

Yes. Cytoplasmic genes: genes on DNA in mitochondria, chloroplasts, and cell plasmids.

Cytoplasmic genetic phenomena indicate that there is genetic material within the cytoplasm that controls certain traits – cytoplasmic genes (referred to as plasma genes). However, scientist Yama Tsuen observed with an electron microscope that there was no chromosome-like structure found in the cytoplasm.

With the improvement of the method of observing the chaos of the sky and the means of research, its meaning has changed. At the microscopic level, it is called hyalurin, or cell fluid; At the submicroscopic level, it is called the cytoplasmic matrix; Cell biochemistry is called cytosol, that is, the part of the supernatant after the cell homogenate has been ultracentrifuged to remove all organelles and particles.

It is composed of water, inorganic salts, lipids, sugars, nucleotides, amino acids and a variety of enzymes. In the cytoplasmic matrix, a variety of chemical reactions are carried out.

The matrix is divided into two parts: the trabecular network, which is distributed throughout the cell and is made up of trabecular fibers of a protein nature. An aqueous cyberspace in which a variety of small molecules, such as sugars, amino acids, inorganic salts, etc., are dissolved or suspended.

The edge of the trabecular network is attached to the plasma membrane of the cell, and is intertwined with cytoskeletal components such as microtubules and microfilaments to form a mesholi, supporting organelles such as endoplasmic reticulum and mitochondria. The free polysomes hang over the intersection of the trabecular dust network. The entire cytoplasm presents a complex structural order.

Some people first treated the cells with detergents to remove soluble proteins, and then prepared cell specimens using a modified water-dried method, and the microtrabecular structure was not visible under the electron microscope. If not treated with detergents, a trabecular network will appear. Therefore, it is uncertain whether the microgirder network really exists.

The role of the nucleus in biological heredity is as follows:

1. Genetic role.

1. A place for the storage and purification of genetic material. From the structure of the nucleus, it can be seen that the most important structure in the nucleus is chromatin, and the components of chromatin are protein molecules and DNA molecules, which in turn are the main genetic material. When genetic material is passed on to offspring, it must be replicated in the nucleus.

So, the nucleus is where genetic material is stored and replicated.

2. The control center of cytogenetic and cellular metabolic activities. Genetic material can be transmitted to offspring after replication, and at the same time, the genetic material must also express the biological traits it controls, and the vast majority of these genetic materials are found in the nucleus.

2. Nuclear heredity.

Nuclear heredity, referred to as nuclear heredity, refers to the inheritance of traits controlled by genes in the nucleus, mainly DNA as the genetic material, and the location of action is within the nucleus, as opposed to cytoplasmic inheritance.

Genetic Engineering and Biological Significance:

Genetic engineering: The genetic traits of an organism are determined by genes. The expression of genes in organisms is controlled by the gene expression regulatory system.

Since the 70s of the 20th century, with people's in-depth understanding of genes and gene expression regulatory systems, as well as the development of biological high technology, people have been able to use the method of genetic engineering, that is, the method of DNA recombination, to directionally modify the genetic traits of organisms and create new types of organisms that meet people's needs.

Biological significance: The genetic material of an organism is DNA, a chromosome is not equal to a DNA molecule, the chromosome is composed of DNA molecules and protein molecules, and chromosomes are mainly present in the nucleus. The number of chromosomes in the cells of each organism is basically stable, such as 46 chromosomes in humans, 8 chromosomes in fruit flies, 16 chromosomes in onions, and 24 chromosomes in rice.

Since the number of chromosomes in each organism is stable, the genetic material of each organism is guaranteed to be stable. It ensures the stability of genetic traits and the continuity of biological pregeny search.