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Ne4ueva [31]
3 years ago
8

Why can the mrna strand made during transcription be thought of as a mirror image of the dna strand from which it was made?

Biology
2 answers:
Marta_Voda [28]3 years ago
8 0

Answer: The mRNA chain is complementry to the DNA molecule and yet it is not identical to it

Explanation:

Expression of a gene implies manufacturing its corresponding protein. It is a multilayered process and this multilayered process has two maib steps. In the first step, the information in DNA is transferred to a messenger RNA (mRNA) molecule by way of a process called transcription. In the transcription process, the DNA of a gene serves as a template for complementary base-pairing, and an enzyme called RNA polymerase II catalyzes the formation of a pre-mRNA molecule, which is then processed and results in the formation of mature mRNA.

The resulting mRNA is a single-stranded copy of the gene, which next must be translated into a protein molecule. During translation, which is the second main step in gene expression, the mRNA is "read" according to the genetic code, which relates the DNA sequence to the amino acid sequence in proteins. Each group of three bases in mRNA comprises of a codon, and each codon specifies a particular amino acid. The mRNA sequence is thus used as a template to assemble in order the chain of amino acids that form a protein. This portion of mRNA is located in between the first nucleotide that is transcribed and the start codon (AUG) of the coding region, and it doesn't affect the sequence of amino acids in a protein.

weqwewe [10]3 years ago
3 0

Answer: because its sequence is complementary to that of the dna

Explanation:

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Es importante que una persona tenga estabilidad emocional, social, y economica ante una situacion de embarazo para poder darle buena vida a el ser que lleva dentro.

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3 0
2 years ago
22. Label the organisms in the food web below as producer (P), primary consumer (PC), secondary consumer (SC),
Paul [167]

In the above food web green algae is the producer, periwinkle and microscopic animals are primary consumers; mussel, barnacle, dogwhelk and crab are secondary consumers; dogwhelk and crab comes under tertiary consumer; dogfish is a quaternary consumer.

What is a food web?

It is a natural interconnection of several food chains in a single ecosystem. Each food chain supplies energy and nutrients through the ecosystem. There are four food webs producer, herbivores, carnivores, omnivores and decomposers.

Here green algae comes under autotrophs(prepares their own food), periwinkle and microscopic animals are herbivores(depend on producer); mussel, barnacle, dogwhelk and crab are carnivores(depend on herbivore); dogfish is an omnivore(depends on both producer and carnivore).

Learn more about food web from the link given below:

brainly.com/question/2179?utm_source=android&utm_medium=share&utm_campaign=question

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3 0
1 year ago
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astra-53 [7]

Answer:

a.) units

Explanation:

just took the test and got it right

4 0
3 years ago
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Take for example - you touching something sharp and instantly moving your hand away.

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3 years ago
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