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siniylev [52]
3 years ago
14

A gene that is normally transcriptionally active can be "silenced" if it is relocated (through experimental manipulation) to cer

tain regions of the chromosome (e.g., near the centromere, which is "heterochromatin-rich"). This phenomenon is an example of
Biology
1 answer:
Genrish500 [490]3 years ago
3 0

Answer:

Position Effect

Explanation:

Position effect is referred to the effect on gene expression when the gene is translocated from the location it is on a chromosome to another location.

As it relates to gene silencing and euchromatic gene repositioning, Position effect variegation best explains it.

Position effect variegation occurs when a gene in some cells is silenced as a result  of rearrangement of chromosomes which translocate or reposition euchromatic genes close to vicinity of heterochomatin. It is this abnormal chromosomal juxtaposition that leads to the gene silencing in stochastic pattern.

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How does inorganic nitrogen from the atmosphere<br> (N2) get into living systems?
lawyer [7]

Answer:

When an organism excretes or dies, nitrogen is in the form of organic nitrogen in its tissues (e.g. amino acids, DNA). During the ammonification process, many fungi and prokaryotes then break the tissue down and release inorganic Nitrogen into the atmosphere as ammonia.

Explanation:

Plants use their roots for nitrogen compounds. When they consume the seeds, animals acquire certain chemicals. When plants and livestock die, or animals excrete waste, the organic nitrogen compounds return to the soil, where microorganisms known as decomposers break down their compounds.

6 0
3 years ago
Synthesis of a protein destined to function in the nucleus occurs:
Kryger [21]
Synthesis of a protein destined to function in the nucleus occurs AT THE RIBOSOMES. 
Proteins are synthesized in the ribosomes. Newly synthesized proteins that are meant for the nucleus usually possess a localization sequences which direct it to a protein on the nuclear membrane through which it will enter into the nucleus.<span />
7 0
3 years ago
The palmer drought severity index is used to rank the strength of a drought. when drought conditions are present over an area, a
finlep [7]

Meteorologists classify tropical cyclones using a measurement of sustained winds within the low-pressure system. How do meteorologists define a "sustained wind"?

it is a 1-minute averaged measure of the hurricane's maximum winds.

If a given year has more named storms than the name-list has names, how are additional storms named?

they are assigned names using the Greek alphabet.

4 0
3 years ago
Carbon in the ocean originates from the atmosphere.<br> True <br> Or <br> False?
icang [17]

Answer:

True

Explanation:

In fact, there is a Oceanic Carbon cycle! Carbon dioxide get absorbed by the ocean's surface from the atmosphere and then get converted into a dissolved inorganic compound and so on.

3 0
3 years ago
Read 2 more answers
Inhibitory neurotransmitters such as glycine and GABA make a postsynaptic cell harder to depolarize by allowing what?
Mashutka [201]

Inhibitory neurotransmitters such as glycine and GABA make a postsynaptic cell harder to depolarize by allowing "an influx of Cl-".

<u>Explanation:</u>

The neurotransmitters which have inhibitory influence on the neuron are termed as "Inhibitory neurotransmitters". The major inhibitory neurotransmitters involve serotonin and gamma-aminobutyric acid (GABA) in the brain and brain stem (spinal cord) respectively.

GABA uptake is temperature and ion-dependent as require both N a^{+} and C l^{-}. Even glycine transporters are also members of the large family of N a^{+} / C l^{-} dependent neurotransmitter transporters. Both of them with the GABA transporters share approximately 50% sequence identity.

8 0
3 years ago
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