Question

Цепочка молекулы ДНК имеет такую последовательность нуклеотидов: АГТЦААТТЦЦЦТТАГААГТЦГГ. Записать последовательность нуклеотидов реплицированного фрагменмента

Answer 1

А (аденин) + Т (тимин) (ll — две водородные связи)
и
Ц (цитозин) + Г (гуанин) (lll — три водородные связи).

По принципу комплементарности строим:

А Г Т Ц А А Т Т Ц Ц Ц Т Т А Г А А Г Ц   Г  Г
ll  lll ll lll  ll ll  ll  ll lll lll lll  ll  ll  ll lll  ll ll lll lll  lll lll
Т Ц А Г Т Т А А Г  Г  Г А А Т Ц Т Т Ц Г Ц  Ц

Answer 2

DNA Replication and Nucleotide Sequence

DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. During replication, the two strands of the DNA molecule separate, and each strand serves as a template for the synthesis of a new complementary strand. The nucleotide sequence of the original DNA molecule is maintained in the newly synthesized DNA molecules.

The given nucleotide sequence of the DNA molecule is: АГТЦААТТЦЦЦТТАГААГТЦГГ.

To determine the nucleotide sequence of the replicated fragment, we need to understand the base pairing rules in DNA. In DNA, adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G). Therefore, we can determine the complementary sequence of the given DNA sequence by replacing each nucleotide with its complementary base pair.

The complementary sequence of the given DNA sequence would be: ТЦАГТТААГГГААТСТТСАТЦЦ.

This is the nucleotide sequence of the replicated fragment based on the given original DNA sequence.

Please note that DNA replication is a complex process, and there are several enzymes and proteins involved in ensuring accurate replication. The replication process involves multiple steps, including unwinding of the DNA double helix, synthesis of new DNA strands, and proofreading mechanisms to correct errors. However, for the purpose of this question, we have focused on determining the complementary sequence of the replicated fragment based on the given original DNA sequence.

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