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jolli1 [7]
1 year ago
12

How does the models support the idea that genetic mutations may arise from environmental factors?

Biology
1 answer:
Vanyuwa [196]1 year ago
7 0

The chemical tags that are attached to DNA, known as the epigenome, can potentially be altered by the environment. These tags change the amount of protein that is produced from the genes by making them more or less active.

  • Traits are frequently influenced by environmental factors rather than genetics. Although not always. Sometimes a gene's DNA sequence or degree of activity is altered by the environment.
  • The proteins that a gene produces can be replaced by either of these effects, which in turn impacts characteristics.
  • The nucleotide sequence of a gene may alter as a result of some harmful environmental influences. DNA strands, for instance, can be damaged by UV light.
  • Certain pollutants, such as those found in plastic and cigarette smoke, can change how DNA bases behave chemically, allowing one DNA base to stand in for another.

To know more about DNA check the below link:

brainly.com/question/16099437

#SPJ4

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Which force most likely created this mountain?
Free_Kalibri [48]

Answer:

third one

Explanation:

shearinh tension

7 0
3 years ago
What adaptation do the roots of mangroves have that make them well-adapted to life in the wetlands?
hjlf

Their roots are near the surface, where they have access to oxygen.

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For this task, you will imagine that you are a reporter for a scientific magazine. Your task is to explain the process of protei
amid [387]

Answer:

Please find the explanation below

Explanation:

Our nucleus is made up of a genetic material called deoxyribonucleic acid (DNA), which is a double-helical structure that stores the genetic information needed for the optimal functioning of any organism. DNA, alongside RNA are nucleic acids that are composed of NUCLEOTIDES subunits. The nucleotide consists of a pentose sugar (deoxyribose in DNA and ribose in RNA), nitrogenous base and a phosphate group.

However, the genetic information stored in the DNA molecule needs to be expressed in order to form useful products (proteins). This genetic expression is done in two stages viz: transcription and translation. Transcription, which is catalyzed by an enzyme called RNA polymerase is the process whereby the information stored in the DNA is used to synthesize a mRNA molecule. However, this mRNA molecule is considered pre-mature until it is processed. RNA processing occurs in three stages viz: 5' capping, polyadenylation, and splicing.

5' capping involves adding a 5' cap to the marks molecule. Polyadenylation involves adding a poly(A) tail to the mRNA molecule while splicing is the removal of introns (non coding regions) with the aid of Spliceosomes and joining of the exons (coding region). After processing, the mRNA becomes matured and ready to be translated.

Translation is the process whereby the mRNA transcript is used to synthesize a protein molecule. It occurs in the ribosomes (organelles for protein synthesis, a complex of rRNA and proteins) where the mRNA is read in a group of three nucleotides called CODON. The reading is done by the Anticodon of a transfer RNA (tRNA), which is complementary to the codon.

Translation occurs in three stages: initiation, elongation and termination. The mRNA attaches to the P site of the ribosomes (initiation) where it is attached to by a tRNA's anticodon complementary to it. The anticodon carries the amino acid corresponding the codon and shifts to the A-site. The addition of amino acid to the polypeptide chain continues (elongation) until a stop codon is encountered, which signals the end of the translation process i.e. termination. This causes the polypeptide (protein) to be released from the E-site.

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5 0
3 years ago
What is the product of 1 2/3 and -3 1/2
antiseptic1488 [7]

Answer:

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Explanation:

So the same thing as the last question I answered, we have to multiply the top row and the bottom row. However, the fractions in the photo are actually mixed numbers so we first have to make them into improper fractions.

1 and 2/3 would be: 5/3

-3 and 1/2 would be: - 7/2

So now we have to multiply them:  5/3  * - 7/2:

Same steps: 5 * 7 = 35; 3 * 2 = 6:

- 35/6, or we could simplify and make it a mixed number so and also add the negative sign:

6 goes into 35 5 times so: -5 and 5/6 or -5 5/6

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3 years ago
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arlik [135]

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