Stabilizing selection is one classification of natural selection which results to decrease in genetic diversity and stabilization of population traits through time. The answer in 1 is B. The difference between directional selection can be from disruptive selection is the genetic variance shifts toward a new phenotype Answer in 2 is D.
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The experiment demonstrated how some biological molecules, such as simple amino acids, could have arisen abiotically, under conditions similar to early Earth. Water, methane, ammonia and hydrogen were the chemicals used to produce the results of the experiment, therefore to produce similar results, one would have to have these chemicals present to initiate the reactions, this could lead to life arising on another planet
Answer:
I think it's desertification
Complete question: <em>"RNA plays important roles in many cellular processes, particularly those associated with protein synthesis: transcription, RNA processing, and translation. Drag the labels to the appropriate bins to identify the step in protein synthesis where each type of RNA first plays a role. If an RNA does not play a role in protein synthesis, drag it to the "not used in protein synthesis" bin.</em>
<em>1. transcription/RNA processing
</em>
<em>2. translation
</em>
<em>3. not used in protein synthesis
</em>
<em>a) snRNA
</em>
<em>b) tRNA
</em>
<em>c) mRNA
</em>
<em>d) RNA primers
</em>
<em>e) pre-mRNA
</em>
<em>f) rRNA</em>
Answer
1. transcription/RNA processing:
<em>a) snRNA</em>
<em>c) mRNA</em>
<em>e) pre-mRNA</em>
2. translation
<em>b) tRNA</em>
<em>f) rRNA</em>
3. not used in protein synthesis
<em>d) RNA primers</em>
Explanation:
There are many RNAs, each in charge of performing a different function.
- preRNA is the precursor of the mature mRNA. These molecules possess long intermediate sequences called introns that do not codify for proteins. It occurs a posttranscriptional modification that eliminates introns and makes the RNA to get mature as mRNA.
- snRNA means <em>"small nuclear RNA"</em>. These are small RNA molecules located in the nucleus and are implicated in the mRNA maturation process. They associate with proteins composing the small nuclear ribonucleoproteins, and their function is to contribute to the initial mARN processing that transcribes from DNA and that must maturate to be exported from the nucleus. These molecules eliminate the introns.
- mRNA means "<em>messenger RNA</em>". These molecules are carriers of the genetic information and are in charge of transporting it from the genome to the ribosomes. They are the mold for the new protein synthesis. Their nucleotide sequence is complementary with the nucleotide sequence of a particular DNA segment.
- rRNA means "<em>ribosomal RNA</em>". They are the principal ribosomal component. Ribosomes are constituted by two subunits. One of them is a big RNA molecule associated with about 20 proteins. The other subunit is composed of three RNA molecules associated with about 50 proteins.
- tRNA means "<em>transference RNA</em>". These molecules are in charge of transferring activated amino acids from the cytosol to the ribosomes where the new protein is being synthesized.
Protein synthesis is initiated when mRNA meets a free ribosome, the primary structure for protein synthesis. Ribosomes can be found in the rough endoplasmic reticulum or floating in the cytosol. They read the mRNA code and add the correct amino acid using transference RNA to build the protein.
Hey there, I can help you on this ok? No worries
Answer:
1.)One sugar is Simple carbohydrates
Explanation: Why is because Simple carbohydrates are called monosaccharides (mono means “one,” and saccharide means “sugar”).
2.) Many parts is Biological macromolecules
Explanation: Biological macromolecules are organic, meaning that they contain carbon. They may contain hydrogen, oxygen, nitrogen, and additional minor elements.
3.) Two parts are Proteins, carbohydrates, nucleic acids, and lipids
4.) A few amino acids are Proteins
Explanation:Proteins range in size from 50 amino acids in length to the largest known protein containing 33,423 amino acids. Macromolecules with fewer than 50 amino acids are known as peptides.
5.) Many aminto acids are Nucleic acids
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