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matrenka [14]
4 years ago
5

Which source is considered a primary source of scientific information?

Biology
1 answer:
algol134 years ago
7 0
In the fields commonly considered sciences, a primary source is the first report of research, published as a journal article, a research report or conference proceeding, or if extensive, a book or book chapter. They include methodology, data and results, and discussion.
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If the nucleotides 5'-GAT-3' are paired with the nucleotides 3'-CUA-5', the pairing must be __________.
arlik [135]

Answer:

The correct answer is A.) during transcription

Explanation:

The pairing during DNA replication and transcription is a little bit different. During replication, A pairs with T, T with A, C with G, and G with C. In transcription T is replaced by U so when there is nucleotide adenine is present in the DNA sequence than uracil will be added against it as complementary nucleotide in mRNA during transcription.

So here 5'-GAT-3' nucleotide sequence is present in DNA and after transcription the nucleotide sequence will be 5'-CUA-5' because U is added against A during transcription. Therefore the correct answer is A.

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Note: This information has been taken out of a website.
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The examination of blood film should be performed at _____ to detect microfilariae.
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