How many nucleotides are needed to code for a protein with 300 amino acids?

The answer is C, 1800 nucleotides. Here’s why: Each amino acid residue in a polypeptide chain was coded for by 3 nucleotides called a codon. With this in mind, a polypeptide with 300 amino acids would need a minimum of 900 nucleotides to code for it (3 x 300 = 900).

How many nucleotides would it take to carry the code for a protein with 4 amino acids?

Each group of three nucleotides encodes one amino acid. Since there are 64 combinations of 4 nucleotides taken three at a time and only 20 amino acids, the code is degenerate (more than one codon per amino acid, in most cases). The adaptor molecule for translation is tRNA….

How many amino acids will still be correct in the protein?

Only four essential amino acids are likely to affect the protein quality of mixed human diets: lysine, the sulfur-containing amino acids (methionine plus cystine), threonine, and tryptophan.

How long is the DNA sequence that codes for the protein?

If you sort through the three billion letters that make up the human genome, you find some surprising things. Only about 1\% of the three billion letters directly codes for proteins. Of the rest, about 25\% make up genes and their regulatory elements.

What would you call a molecule with 300 amino acids?

Amino acids are the building blocks for proteins. There are 20 different amino acids commonly found in proteins and often 300 or more amino acids per protein molecule.

How many codons are in 300 amino acids?

100 codons
Explanation: Each amino acid corresponds to codons; sequences of 3 base pairs. If you have 300 base pairs, you get 100 codons.

How does a gene code for a protein?

Each sequence of three nucleotides, called a codon, usually codes for one particular amino acid. (Amino acids are the building blocks of proteins.) Through the processes of transcription and translation, information from genes is used to make proteins.

How does DNA code for amino acids?

In the genetic code, each three nucleotides in a row count as a triplet and code for a single amino acid. So each sequence of three codes for an amino acid. And proteins are made up of sometimes hundreds of amino acids.

What is the DNA code for proteins?

Only about 1 percent of DNA is made up of protein-coding genes; the other 99 percent is noncoding. Noncoding DNA does not provide instructions for making proteins. Scientists once thought noncoding DNA was “junk,” with no known purpose.

How do you find the sequence of a protein code?

The protein sequence can also be found by clicking on the protein accession number in the Nucleotide record or in the RefSeq section of the Gene record.

How many nucleotides are there in a DNA sequence?

You have a DNA sequence that codes for a protein and is 105 nucleotides long. If a frameshift mutation occurs at the 85th base, how many amino acids will be correct in this protein?

What is a single nucleotide point mutation?

A genetic mutation in which a point mutation of a single nucleotide changes the existing code to a sequence that codes for a different amino acid, which results in a nonfunctional protein. Ex. when a substitution mutation results in the incorrect amino acid.

How is a frameshift mutation similar to deletion mutation?

This is similar to a real deletion mutation that may occur in a gene because similar to the sentence all the nucleotides (letters) shift. You have a DNA sequence that codes for a protein and is 105 nucleotides long. A frameshift mutation occurs at the 85th base – how many amino acids will be correct in this protein?

Are there any silent mutations in the amino acid sequence?

Since there is redundancy in the genetic code (several codons code for each amino acid) there can be “silent” mutations in the DNA that do not affect the AA sequence. On the other hand a mutation in the amino acids can only come from a mutation in the DNA.