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Arte-miy333 [17]
3 years ago
11

What type of protein regulates the turning on and off of genes?

Biology
2 answers:
Ivan3 years ago
7 0

Answer:

Activator protein binding is thought to cause DNA to loop out, bringing the activator protein into physical proximity with RNA polymerase and the other proteins in the complex that promote the initiation of transcription. Different cell types express characteristic sets of transcriptional regulators.

Naily [24]3 years ago
3 0

Answer:

Activator protein binding is thought to cause DNA to loop out, bringing the activator protein into physical proximity with RNA polymerase

Explanation:

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In the rat, the allele for red eye colour is dominant over the alleles for brown colour. Consider a cross between a rat that is
chubhunter [2.5K]

Answer:

1) RR x rr

2) Shown below

3) 100% Rr with red eyes

4) Punnett square shown (Rr x Rr)

5) 25% of the offspring are h0m0zygous dominant with red eyes (RR), 50% are heterozygous with red eyes (Rr), and 25% are h0m0zygous with brown eyes (rr)

Explanation:

Let's say the allele for red eyes is R and the allele for brown eyes is r.

1. A cross between a h0m0zygous dominant (two copies of the dominant allele, R) and h0m0zygous recessive (two copies of the recessive allele, r) is: RR x rr

2.                            R                  R

                  r          <em>Rr                Rr</em>

                 

                  r          <em>Rr                Rr</em>

<em />

The F1 generation is shown in the Punnett square above.

3. The F1 generation are 100% Rr. They are heterozygous. Since red (R)                     is dominant, the rats all have red eyes

4. A cross between the F1 generation (Rr x Rr) gives the F2 generation

                              R                  r

                  R         <em>RR              Rr</em>

                 

                  r          <em>Rr                rr</em>

<em />

5. 25% of the offspring are h0m0zygous dominant with red eyes (RR), 50% are heterozygous with red eyes (Rr), and 25% are h0m0zygous with brown eyes (rr)

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3 years ago
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I think it's B) Wave
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<em>Answer:</em>

<em>Rain forests recycle nutrients. (Apex)</em>

<em>Explanation:</em>

<em>Plants can convert atmospheric carbon dioxide to other carbon based compounds through photosynthesis. Rain forests are the largest carbon revisers and are responsible for most of the oxygen in the atmosphere  </em>

<em> </em>

<em>Basically they take in carbon dioxide,convert it to oxygen and then release the oxygen back into the environment. Thus helping to prevent the plant from heating up.</em>

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si juego y mi id es 2494360710

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<u>Answer</u>:

<u>Question 1.</u> 1.fragmentation  The roads act as barriers which cannot/or will not be crossed by many forest dwelling species. They are either physical or psychological barriers for animals. The presence of humans and cars further increases this effect. Thus, the original forest habitat becomes fragmented into smaller areas with smaller populations.

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As the forest becomes fragmented, the original area and population of a species is divided into smaller units. Thus, for the individuals belonging to such a diminished population, the chances of finding an unrelated mate will decrease rapidly with time. This will lead to inbreeding and a loss of genetic diversity.

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3 years ago
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