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Llana [10]
3 years ago
6

Transcriptionally inactive regions of the genome are typically heavily methylated. True or false?

Biology
1 answer:
polet [3.4K]3 years ago
6 0

The answer is true.

DNA methylation is a process by which methyl groups are added to the DNA, more precisely to its nucleotides adenine or cytosine (they are methylated) via enzymes called DNA methyltransferases. This process as a result can change the activity of a DNA. For example, if DNA of gene promoter is methylated gene transcription is repressed. The opposite process is DNA demethylation.

So, DNA methylation is an epigenetic mechanism meaning that gene activity can be changed and inherited that way, but the sequence  of DNA remains the same.

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The Davises were excited about their newborn twin boys and couldn't wait to take them to see Mr. Davis's father. Grandfather Dav
andreyandreev [35.5K]

Answer:

Varicella-zoster virus

Explanation:

Varicella-zoster virus (VZV) is a virus with double-stranded DNA as its genome. It is a member of the family Herpesviridae. The virus causes chickenpox in children. It is mostly present in the latent form after the disease subsides and the same virus can cause shingles in adults under specific conditions. Therefore, shingles is also called a reactivated form of chickenpox caused by the latent varicella-zoster virus. The virus has an incubation period of 10 to 23 days and causes the formation of pus-filled small vesicles on the face or upper trunk.

6 0
3 years ago
What is the approximate hydronium ion concentration and hydroxide ion concentration in a cup of tea?
Natasha2012 [34]

The hydronium ion is an oxonium ion whose chemical formula is H3O + or H + (aq). It is found in the solid, gaseous or liquid state (protonation of a molecule of water).


The concentration of hydronium ion is directly linked to the pH of the tea (or any solution) by this equation.:

C° (hydronium) = 10^(-pH)


if the pH of the tea is 6 for example, than:

C° (hydronium) = 10^(-pH) = 10^(-6).

4 0
3 years ago
Read 2 more answers
_______ part of our brain generates signals for involuntary action.​
Ksivusya [100]

Answer:

the brain stem

Explanation:

the structures of our brain stem, in conjunction with our spinal cord (not a part of our brain) is responsible for involuntary action. Not sure if it generate signals, but hey it's better than no answer.

3 0
3 years ago
Read 2 more answers
Estimate the length of time that it took for CO 2 to from 200 300 ppm
xz_007 [3.2K]

answer:

it took 17,000 years for CO2 to go from 200 to 300 ppm.

<em>-- please mark the brainliest and click the thanks button if correct :)</em>

7 0
3 years ago
Which of the following white blood cells is not capable of phagocytosis?
denpristay [2]

Answer:

Lymphocytes

Explanation:

White blood cells ( leukocytes) is one of the formed elements of blood that provides immunity and protection against the pathogens. Different types of leukocytes are eosinophils, basophils, monocytes, lymphocytes and neutrophils.

Lymphocytes are B cells and T cells of the immune system. B cells produce antibodies against the antigen and T cells kills the harmful cells of the body. by specific cell determinants.These cells are not capable of phagocyte the pathogen.

Thus, the correct answer is option (A).

3 0
3 years ago
Read 2 more answers
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