Pinker mentions that only 1% of the human genome codes for proteins (the rest included introns, regulatory sequences, and repetitive DNA, some of it parasitic—we will talk about this later). Given that the human genome contains 3 x 109 base-pairs of DNA, there are about 20,000 human genes, and three base pairs code for each amino acid in a protein, how many amino acids are in the average human protein? [Hint: start with what fraction of base pairs in the human genome code for proteins.]

Pinker mentions that only 1% of the human genome codes for proteins (the rest included introns, regulatory sequences, and repetitive DNA, some of it parasitic—we will talk about this later). Given that the human genome contains 3 x 109 base-pairs of DNA, there are about 20,000 human genes, and three base pairs code for each amino acid in a protein, how many amino acids are in the average human protein? [Hint: start with what fraction of base pairs in the human genome code for proteins.]

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter15: Genomes And Genomics

Section: Chapter Questions

Problem 11QP: When the human genome sequence was finally completed, scientists were surprised to discover that the...

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When the human genome sequence was finally completed, scientists were surprised to discover that the genome contains far fewer genes than expected. How many genes are present in the human genome? Scientists have also found that there are many more different kinds of proteins in human cells than there are different genes in the genome. How can this be explained?
What percentage of the DNA in the genome actually corresponds to genes? How much is actually protein-coding exons? What makes up the rest?
The human genome contains thousands of sequences known as small open reading frames, some of which encode proteins of about 30 amino acids. What is the minimum number of nucleotides required to encode such a protein?
By average, how many Sau3A (5’GATC3’) sites are there in a 10 kd DNA molecule? (1/4)^6 * 10,000 = 2.44140625 => 2.4 For the above 10 kb DNA, if you use Sau3A to do a complete digestion, you will only get a lot of small fragments ( 200~500 base pairs). What should I do if I want to get larger digested fragments (say 3 to 5 kb) Please answer asap and type your answer and do not copy from anywhere please
. While studying the structure of a small gene that was recently sequenced during the Human Genome Project, an investigator notices that one strand of the DNA molecule contains the following: 20 adenine (A) bases 30 cytosine (C) bases25 guanine (G) bases 22 thymine (T) bases How many of each base is found in the complete double-stranded molecule?
A diploid human cell contains approximately 6.4 billion base pairs of DNA. Assuming that the linker DNA encompasses 35 bp, how many nucleosomes are present in such a cell? Use two significant figures. How many histone proteins are complexed with this DNA? use two significant figures.
Why are consensus sequences found in cis-elements typically only 5-6 bases long?Question 19 options: because 6 specific nucleotides is so unique that you would never find the same 6 nucleotides anywhere else in the genome. because they don't want to be too specific because it developed that way by random chance through evolution because only 5-6 bases are exposed to one side of the DNA helix because proteins are very small and can only span 5-6 bases
In the human genome for the beta chain of haemoglobin (the oxygen-carrying protein in the red blood cells), the first 30 nucleotide in the amino acid coding region is represented by the sequence 3’-TACCACHTGGACTGAGGACTCCTCTTCAGA-5' What is the sequence for the partner strand?
One of the following is a characteristic of eukaryotic genetic material? 1. Eukaryotic genetic material is compacted by wrapping the double-helix around histone proteins to form nucleosomes. 2. Eukaryotic genetic material consists of supercoiled circular DNA molecules complexed with proteins into chromosomes. 3. Eukaryotic genetic material consists of relaxed linear DNA molecules complexed with RNA into a 30 nm fiber. 4. Eukaryotic genetic material is compacted by folding linker regions around non-histone proteins to form a scaffold.
What type of mutation (missense, silent, and non-sense) was introduced in your sequence when G was substituted with C (Question C) ? Question C: Guanine nucleotide (G shown in red in the DNA sequence below) was substituted by C Write out the sequence of the mutated DNA and the protein made from it. What is the effect of this mutation on the protein? (For example, how will the mutation affect the length and sequence of the protein? What about the function of the protein?)
What will be the order of amino acids derived from the following DNA sequence 5’-TGATCGCACAAT-3’? Explain briefly. (1.5) If the base G (denoted by an asterisk) in the sequence 5’-TGATCG*CACAAT-3’ is replaced by C due to a mutation, the new sequence will be 5’-TGATCCCACAAT-3’ what will be the new amino acid sequence? Explain briefly. (1.5) If the anticodon sequence of a tRNA is 5’-GCG-3’, what amino acid will it carry? Explain briefly. (1.5) What would be the effect of mutation if the C is changed to A in the anticodon? Explain briefly. (1.5)
If a bacterial protein is 3,300 amino acids long, how many nucleotidepairs long is the gene sequence that codes for it?