When scientists were attempting to determine the structure of the genetic code, Crick and coworkers found that when
three base additions or three base deletions occurred in a single gene, the wild-type phenotype was sometimes restored
.
What is meant by the statement the genetic code is triplet and degenerate?
What is meant by the statement the genetic code is triplet and degenerate group of answer choices? The code is degenerate,
meaning more than one codon encodes for the same amino acid
. … Triplets that code for the same amino acid are known as synonyms.
Which type of mutation helped lead to the understanding that the genetic code is based on triplet codons?
Both the codons UUU and UUC specify the amino acid phenylalanine. What is the term for this phenomenon? Which type of mutation helped lead to the understanding that the genetic code is based on triplets?
insertions or deletions of one or two nucleotides resulted in frameshift mutations
.
Who discovered DNA code?
A drastic change in the life sciences was brought about by the discovery of the double helical structure of DNA by
James Watson and Francis Crick
in 1953 [1], eventually leading to the deciphering of the genetic code [2]. The elucidation of the genetic code was one of the greatest discoveries of the 20th century.
What is the translation initiator triplet in both prokaryotes and eukaryotes what amino acid is coded by this triplet?
In both prokaryotic and eukaryotic cells, translation always initiates with the
amino acid methionine
, usually encoded by AUG.
What is the coding strand called?
When referring to DNA transcription, the coding strand (
or informational strand
) is the DNA strand whose base sequence is identical to the base sequence of the RNA transcript produced (although with thymine replaced by uracil). It is this strand which contains codons, while the non-coding strand contains anticodons.
How is the genetic code read?
The genetic code consists of the sequence of bases in DNA or RNA. Groups of three bases form codons, and each codon stands for one amino acid (or start or stop). The codons are
read in sequence following the start codon until a stop codon is reached
. The genetic code is universal, unambiguous, and redundant.
How does genetic code help in protein synthesis?
Proteins are encoded by genetic codes stored in DNA. The ribosome, the “protein synthesis machinery,”
deciphers codons aligned along mRNA to synthesize a specific polypeptide
, which then folds into a defined structure/conformation (1). … Synonymous codons also influence the function of proteins.
What is genetic code and its properties?
The genetic code
consists of the sequence of bases in DNA or RNA
. Groups of three bases form codons, and each codon stands for one amino acid (or start or stop). The codons are read in sequence following the start codon until a stop codon is reached. The genetic code is universal, unambiguous, and redundant.
Why the genetic code is considered as Commaless?
Answer:Genetic code considered as commaless
because it is continuous and non overlapping
. … Genetic code is continuous,commaless and non overlapping,Genetic code contain many codons that are arranged in a particular array to form open reading frame. The genetic code is read as a continuous base sequence .
Who is the father of genetic code?
Marshall Nirenberg
is best known for “breaking the genetic code” in 1961, an achievement that won him the Nobel Prize.
Is DNA a binary code?
The
language of DNA is digital, but not binary
. … Because each digit can have 4 values instead of 2, a DNA codon has 64 possible values, compared to a binary byte which has 256. A typical example of a DNA codon is ‘GCC’, which encodes the amino acid Alanine.
What is a Cistron Toppr?
Cistron is
the segment of DNA having information for synthesis of a particular protein or RNA
. The segment encodes for the synthesis of RNA or polypeptide of protein molecule.
What are the 7 steps of protein synthesis?
- DNA unzips in the nucleus.
- mRNA nucleotides transcribe the complementary DNA message.
- mRNA leaves nucleus and goes to ribosome.
- mRNA attaches to ribosome and first codon is read.
- tRNA brings in proper amino acid from cytoplasm.
- a second tRNA brings in new amino acid.
What makes up a code for each amino acid?
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 are the steps of protein synthesis?
It includes three steps:
initiation, elongation, and termination
. After the mRNA is processed, it carries the instructions to a ribosome in the cytoplasm.
