Question

Выполните задания: 1. Фрагмент цепи ДНК -ААТГТАГГТЦЦАЦГЦ-. Достройте вторую цепочку ДНК. Определите число аденина, тимина, гуанина, цитозина в двух полинуклеотидных цепях? 2. Одна из цепей ДНК имеет последовательность нуклеотидов: -АТААГГАТГЦЦТТТТ-. Определите последовательность нуклеотидов иРНК по второй цепи ДНК и соответствующую последовательность аминокислот фрагмента белка.

Answer 1

Ответ:

1)ТТАЦАТЦЦАГГТГЦГ

А=7

Т=7

Г=8

Ц=8

2)АУА АГГ АУГ ЦЦУ УУУ

ІлеАргМетПроФен

Answer 2

Task 1: Building the Second DNA Strand and Determining the Number of Nucleotides

The given DNA fragment is AATGTAGGTTCCAGC. To build the second DNA strand, we need to find the complementary base pairs for each nucleotide.

The complementary base pairs are as follows: - Adenine (A) pairs with Thymine (T) - Thymine (T) pairs with Adenine (A) - Guanine (G) pairs with Cytosine (C) - Cytosine (C) pairs with Guanine (G)

Using this information, we can build the second DNA strand:

AATGTAGGTTCCAGC TTACATCCAAGGTCCG

Now, let's determine the number of Adenine (A), Thymine (T), Guanine (G), and Cytosine (C) in the two polynucleotide chains.

In the first DNA strand: - Adenine (A): 3 - Thymine (T): 4 - Guanine (G): 4 - Cytosine (C): 3

In the second DNA strand: - Adenine (A): 4 - Thymine (T): 3 - Guanine (G): 3 - Cytosine (C): 4

Task 2: Determining the RNA Sequence and Corresponding Amino Acid Sequence

The given DNA sequence is ATAAGGATGTTTTT. To determine the RNA sequence, we need to replace Thymine (T) with Uracil (U) since RNA uses Uracil instead of Thymine.

The RNA sequence for the second DNA strand is: AUUCCUAACAAAAA

To determine the corresponding amino acid sequence, we need to use the genetic code. Each three-letter sequence of RNA (called a codon) corresponds to a specific amino acid.

Using the RNA sequence, we can determine the codons and their corresponding amino acids:

- AUU: Isoleucine (Ile) - CCU: Proline (Pro) - AAC: Asparagine (Asn) - AAA: Lysine (Lys) - AAA: Lysine (Lys) - A: Stop codon

Therefore, the corresponding amino acid sequence for the given DNA sequence is: Ile-Pro-Asn-Lys-Lys-Stop

Please note that the provided information is based on the given DNA sequence and the standard genetic code.