If the gene is obscured and hidden by folds or heavily methylated, RNA polymerase has a difficult time getting to the promoter region to initiate transcription. If the polymerase can't get there, then the gene is not transcribed and translated to a protein.
The dense region in the nucleus of female cells that forms when one of the X chromosomes is randomly inactivated is called a Barr body. This process, known as X-inactivation, ensures dosage compensation between males (who have one X chromosome) and females (who have two X chromosomes). The inactive X chromosome is converted into a Barr body to help regulate gene expression.
In a eukaryotic cell, the dense area that contains nucleic acids is the nucleus.
loose connective tissue lacks the massive fibrous reinforcement that characterizes dense connective tissue. Nevertheless, the same types of fibers are still found, although fewer and more delicate. S.A
Bacterial DNA is typically found within the nucleoid region of the bacteria cells. The nucleoid is a dense region within the bacterial cell where the genetic material is located. It is not enclosed within a membrane-bound nucleus like in eukaryotic cells.
A ligament is dense connective tissue that connects bones to provide stability and support to a synovial joint. It helps limit excessive movement and provides resistance to forces acting on the joint.
Yes, a Barr body is an inactivated X chromosome seen in the nuclei of female mammals. It appears as a small, dense, dark-staining body due to the condensation of the chromatin, which is a result of X chromosome inactivation to equalize gene expression between males and females.
Plutonium is dense because of its high atomic mass and tight packing of its atoms in a crystal lattice structure. The density of plutonium is significantly higher than that of most common materials due to these factors.
The dense region in the nucleus of female cells that forms when one of the X chromosomes is randomly inactivated is called a Barr body. This process, known as X-inactivation, ensures dosage compensation between males (who have one X chromosome) and females (who have two X chromosomes). The inactive X chromosome is converted into a Barr body to help regulate gene expression.
the chromosomes are replicated (copied) and are compacted into dense visible structures
To be obtuse is to be slow, or dim, or dense. The idiomatic expression suggests that someone is being deliberately dense, ignorant, crass, or insensitive.
Yes, atomic nuclei are extremely dense. They contain positively charged protons and neutrons packed tightly together in a small volume, which gives them a high density. This dense packing of particles is what helps hold the nucleus together through strong nuclear forces.
Diamond is the most dense medium among glass, water, and diamond. This is because density is a measure of how much mass is packed into a given volume, and diamond has a higher atomic packing density compared to water and glass, making it the most dense material.
An extremely dense dying star is called a neutron star. It is formed when a massive star collapses in a supernova explosion, leaving behind a core made mostly of neutrons. Neutron stars are incredibly dense, packing the mass of the sun into a sphere only about 12 miles in diameter.
The palisade cell is packed with chloroplasts, which contain chlorophyll for photosynthesis. This dense packing of chloroplasts allows the cell to efficiently capture sunlight for energy production.
A white dwarf is typically about the size of Earth, but with a mass comparable to that of the Sun. This means it is extremely dense, packing a lot of mass into a small volume.
The molecular structure generally prevents the molecules from packing tightly and hence they tend to be lighter and less dense than many metals and ceramics. Halogenated - and particularly brominated polymers, are an exception.
In a eukaryotic cell, the dense area that contains nucleic acids is the nucleus.