students are modeling mRNA during the process of protein synthesis. which answer choice correctly describes the model of mRNA strand being transcribed

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05-04-2021
Biology

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students are modeling mRNA during the process of protein synthesis. which answer choice correctly describes the model of mRNA strand being transcribed

Sagot :

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samueladesida43 samueladesida43 · Answer 1 · 2021-04-10T03:03:48-04:00

Answer:

This question lacks options, the options are:

A. the mRNA strand is complementary to the DNA template strand; however, uracil instead of adenine is paired with thymine

B. the mRNA strand is complementary to the DNA template strand; however, uracil instead of thymine is paired with adenine

C. the mRNA strand is an exact copy of the DNA template strand; however uracil instead of adenine is paired with thymine

D. the mRNA strand is an exact copy of the DNA template strand; however, uracil instead of thymine is paired with adenine

The answer is B

Explanation:

Protein synthesis which encompasses how gene is used to synthesize proteins consists of two processes namely; transcription and translation.

- Transcription is the process whereby the sequence of a DNA template is used to synthesize a mRNA strand. The mRNA sequence is synthesized using the COMPLEMENTARY BASE PAIRING RULE, which states that Adenine base (A) will always hydrogen pair with Thymine (T) while Guanine (G) will always pair with Cytosine (C).

This means that the mRNA strand produced is complementary to the DNA template strand that was transcribed. However, Uracil base (U) replaces thymine (T) in the mRNA molecule because Thymine is not found in RNA. Hence, Uracil instead of Thymine pairs with Adenine in the mRNA.

That is;

A - U, T - A, G - C.

Sagot :

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