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Allushta [10]
2 years ago
6

In prokaryotes, genes can exist as operons that are transcribed into a polycistronic mRNA, containing multiple genes in a single

transcript. In eukaryotes, transcripts exist only as monocistronic mRNA containing a single gene. What fundamental genetic difference is responsible for this distinction?
Biology
1 answer:
Ronch [10]2 years ago
3 0

Complete question:

Question: In prokaryotes, genes can exist as operons that are transcribed into a polycistronic mRNA, containing multiple genes in a single transcript. In eukaryotes, transcripts exist only as monocistronic mRNA containing a single gene. What fundamental genetic difference is responsible for this distinction?

(A) mRNA is transported outside of the nucleus in eukaryotes.

(B) Prokaryotic mRNA has a five-prime GTP cap.

(C) Prokaryotes use a single start codon for multiple genes.

(D) In eukaryotes, each gene has its own transcription initiation site

Answer:

(D) In eukaryotes, each gene has its own transcription initiation site

Explanation:

Eukaryotic mRNAs are monocistronic in nature which means that one mRNA carries the single transcript to be encoded. Each monocistronic mRNA is encoded by a stretch of a gene that has a specific initiation site to start the process of transcription. On the other hand, prokaryotes have some mRNAs that carry the code for two or more different polypeptides. These mRNAs are called polycistronic. For a polycistronic mRNA, multiple transcripts are transcribed under the single transcription initiation site.

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A cell with 80 chromosomes undergoes meiosis. How many chromosomes are found in the daughter cells? How many daughter cells are
qwelly [4]

Answer:

Four daughter cells are produced each with 40 chromosomes. The daughter cells would exhibit genetic variations and would not be genetically identical to each other.

Explanation:

Meiosis is a cell division that forms four daughter cells from one parent cell as two sequential division meiosis I and meiosis II do not include any DNA replication between them. Crossing over during prophase-I of meiosis-I includes the exchange of genetic segments and occurs between the homologous chromosomes. It produces new gene combinations in the daughter cells which were otherwise not present in the parent cell.

Since there is no DNA replication between meiosis I and meiosis II, the daughter cells have half the number of the chromosomes compared to the parent cell. This occurs as homologous chromosomes move towards the opposite pole during anaphase I.

Therefore, a parent cell with 80 chromosomes will make a total of 4 daughter cells by meiosis. Each daughter cell would have 40 chromosomes. These daughter cells would have some new gene combinations and would be genetically dissimilar among themselves.  

5 0
3 years ago
Can anyone help me with this it would really help me out right now
Ludmilka [50]

Answer:

soil nutrients

Explanation:

an ecological climax resulting from soil factors and commonly persisting through cycles of climatic and physiographic change

5 0
3 years ago
For accuracy and clarity, the initial point of reference for body regions or parts is anatomic position. An individual is in thi
fgiga [73]

This should be the answer.

  1. Head
  2. UP,
  3. STRAIGHT
  4. ERECT,
  5. UP
  6. Looking forward.

<h3>What is the anatomic position?</h3>

The anatomic position refers to the position in which a person is standing upright facing the observer, feet parallel and flat on the floor, and palms facing forward. The upper limbs are at the body’s sides with the palms facing forward.

Thus, this could be the answer.

To learn more about  anatomic position click here:

brainly.com/question/19261448

#SPJ1

7 0
1 year ago
Make a decision about the molecule NaHCO3 classification organic or inorganic
motikmotik

<u>Answer:</u>

NaHCO_{3} is an inorganic compound.

<u>Solution:</u>

  1. Firstly, all the known definitions of organic compounds excludes Carbonic acid and it's salt from organic compounds except if 'C' is present in the cation.  
  2. Secondly, Sodium is a metal which organic compounds cannot posses as a compound.  
  3. Lastly, there is absence of C-H bond which is present in all the organic compounds.

Hence, we can conclude that NaHCO_{3}is an inorganic compound though there is presence of Carbon atom in it.

6 0
2 years ago
Would a population with alot of generic variation or little generic variation be more likely to have individuals that can adapt
musickatia [10]
A population with a lot of genetic variation would likely have more phenotypic variation; therefore, such a population would more likely have individuals that can adapt to a changing environment. mutation can result in new alleles on chromosomes. ... this is the same effect that genetic drift can have on small populations.
8 0
2 years ago
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