I have built an urn model for a DNA sequence. I have taken the letters from a sequence 1946 nucleotides long. The urn contains 259 Adenines, 699 Cytosines, 401 Thymines and 587 Guanines How many start codons will I find on average in the entire sequence when I draw all of the bases from the urn without replacement? Please I'm not too sure how to tackle this.
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I have built an urn model for a DNA sequence. I have taken the letters from a sequence 1946
How many start codons will I find on average in the entire sequence when I draw all of the bases from the urn without replacement?
Please I'm not too sure how to tackle this.
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- Below is a sequence of 540 bases from a genome. What information would you use to find the beginnings and ends of open reading frames? How many open reading frames can you find in this sequence? Which open reading frame is likely to represent a protein- coding sequence, and why? Which are probably not functioning protein-coding sequences, and why? Note: for simplicitys sake, analyze only this one strand of the DNA double helix, reading from left to right, so you will only be analyzing three of the six reading frames shown in Figure 19.4.State the properties of the WatsonCrick model of DNA in the following categories: a. number of polynucleotide chains b. polarity (running in same direction or opposite directions) c. bases on interior or exterior of molecule d. sugar/phosphate on interior or exterior of molecule e. which bases pair with which f. right- or left-handed helixUsing Figures 8.7 and 8.9 as a guide, draw a dinucleotide composed of C and A. Next to this, draw the complementary dinucleotide in an antiparallel fashion. Connect the dinucleotides with the appropriate hydrogen bonds. FIGURE 8.9 The two polynucleotide chains in DNA run in opposite directions. The left strand runs 5 to 3, and the right strand runs 3 to 5. The base sequences in each strand are complementary. An A in one strand pairs with a T in the other strand, and a C in one strand is paired with a G in the opposite strand. FIGURE 8.7 Nucleotides can be joined together to form chains caled polynucleotides. Polynucleotides are polar molecules with a 5 end (at the phosphate group) and a 3 end (at the sugar group). An RNA polynucleotide is shown at the left, and a DNA polynucleotide is shown at the right.
- Design a pair of primers to amplify the entire length of the following 45 base pair sequence.Make each primer 14 bases long. Write the sequences of the primers in 5' to 3' order.(Hint: It will help for you to write out BOTH strands of the DNA sequence listed below.5'-GATGCCCGTTGGATAAATTGGGCGTCTAGAATCGGTCACACTTAG-3'What is the nucleotide sequence of the complementary strand of the DNA molecule: 5’-AATGCGATCTTCAT-3’? Indicate the 5’ and 3’ ends. Follow the same format as the given sequence.DNA molecules consist of chemically linked sequences of the bases adenine, guanine, cytosine, and thymine, denoted A, G, C, and T. A sequence of three basesiscalleda codon. A base may appear more than once in a codon. a) How many different codons are there? b) The bases A and G are purines, while C and T are pyrimidines. How many codons are there whose first and third bases are purines and whose second base is a pyrimidine? c) How many codons consist of three different bases?
- Which one of the following options would be a good way to identify the location of the poly A tail in the published DNA sequence for a gene? Look for AATAAA near the 3’ UTR of the DNA sequence. Look for TTTTTTTTTTTTTT… (many Ts) near the 3’ UTR of the DNA sequence. Look for AAAAAAAAAAA… (many As) near the 3’ UTR of the DNA sequence. Look for a stop codon.Below is a sequence of DNA. 5'-ttaccgataattctctctcccctcttccatgattctgattaaagaaggcgagaacgaaactatttgttaatacc-3' How many codons are in the longest ORF? What is the frame of the shortest ORF? How many AA are in the shortest ORF?Below is a sequence of DNA.5'-ttaccgataattctctctcccctcttccatgattctgattaaagaaggcgagaacgaaactatttgttaatacc-3' How many "reading frames" can be identified for this sequence? How many "open reading frames" can be identified for this sequence? What is the frame of the longest ORF? How many codons are in the longest ORF? What is the frame of the shortest ORF? How many AA are in the shortest ORF? Using the one letter code for Amino Acids, what is the predicted AA sequence of the shortestORF (from N to C-terminal end)? Using the one letter code for Amino Acids, what is the predicted AA sequence of the longestORF (from N to C-terminal end)?
- A strand of nucleic acid is defined by its sequence of nucleotides: A, C, T, and G. How many different sequences are possible for a nucleic acid that is 200 nucleotides long? How does that number compare to the estimated number of atoms in the universe, which is approximately 1080?Hello, I would really appiarte help appreciate help. This is a blank question so I am unsure why it was rejected immeditely the first time. Thank you in advance. Identify the type of mutation and how it would affect the protein made (amino acid) if the following changes occurred in the DNA antisense strand First codon change from TAC to TAT. Third codon change from ACG to ACA. Ninth nucleotide changes from G to T. Nucleotide with adenine (A) base inserted between 3rd and 4th nucleotide. Types of Mutation Changes in the Amino Acid 1. 2. 3. 4.Draw the structure of the following DNA sequence (5’-AG-3’) hydrogen bonded through Watson-Crick base pairing to the complementary PNA sequence (Cterminus-TC-Nterminus). Make sure to include both the sugar phosphate backbone of your DNA sequence, as well as the peptide backbone of your PNA sequence. DNA: 5’-AG-3’ PNA: (C)-TC-(N)
