When DNA coils into a chromosome, it keeps its shape with the help of associated proteins. Where the DNA is very tightly coiled, and the proteins very condensed, that region appears as a dark band (G-band). G-bands are not very rich in genes, which means that it's ok that the DNA is tightly coiled, because it does not have to be very accessible anyway. Note that these bands are only visible when certain types of dye are used. Other types of dye will case gene-rich regions to stain darker and gene-poor regions to stain more brightly. See also: Chromosomes: Organization and Function By Adrian Thomas Sumner, 10.2.2
no
It could be a sedimentary rock or a foliated metamorphic rock exhibiting alternating bands of light and dark minerals.
Elevated bands indicate an increase in immature white blood cells, which are released by the bone marrow in response to an infection or inflammation. This can be a sign of an active immune response in the body.
The segregation of light and dark colored minerals into thin layers or bands is known as foliation. This occurs during the process of metamorphism, where the minerals align in parallel layers due to the deformation and recrystallization of the rock under intense pressure and temperature conditions. Foliation gives the rock a banded appearance and can indicate the direction of pressure during its formation.
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To determine band levels on chromosome 10 cytogenetically, you would use staining techniques like Giemsa staining to create a banding pattern. This banding pattern consists of light and dark bands that are specific to different regions of chromosome 10. By comparing the banding pattern to a standardized map, you can determine the band levels on chromosome 10.
Yes, in striated muscle you can think of the "A" bands as the dArk bands and the "I" bands as the lIght bands.
likely a sedimentary rock, which forms in layers over time. The light and dark bands may indicate different compositions or sediment types deposited during different periods. These rocks often provide clues about past environmental conditions.
Yes, smooth muscle has alternating dark and light bands known as the A and I bands, respectively.
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Nucleus
In striated muscle fibers, light bands (I bands) are formed by the protein actin, while dark bands (A bands) are formed by the protein myosin. These proteins play a crucial role in the sliding filament theory of muscle contraction.
It could be a sedimentary rock or a foliated metamorphic rock exhibiting alternating bands of light and dark minerals.
The first 3 band on a resistor indicate the value of that resistor.
A and I bands
Skeletal and cardiac muscle tissues are both considered as striated, which means that they have light and dark bands.
The alternation dark and light bands are found in muscles of humans and animals. They give the muscle fibers their striated appearance.