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Central Dogma and Mutations: Linking Genotype to Phenotype

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What does an organism's genotype depend on?

The sequence of bases in its DNA

What is the role of alleles of the same gene?

They differ in their DNA sequence

During translation, which direction are mRNA base triplets read?

5¢ to 3¢ direction

Which type of mutations involve changes at the chromosome level?

<p>Chromosome-level Mutations</p> Signup and view all the answers

What is the consequence of a mutation on an organism's phenotype?

<p>It may or may not affect the proteins produced</p> Signup and view all the answers

What does the genetic code specify?

<p>The sequence of nucleotides that codes for amino acids</p> Signup and view all the answers

Why does the genetic code have to be in triplets?

<p>To allow for non-overlapping nucleotide sequences</p> Signup and view all the answers

What does AUG code for in the genetic code?

<p>Methionine</p> Signup and view all the answers

What does it mean for the genetic code to be redundant but not ambiguous?

<p>Multiple codons can code for the same amino acid, but each codon codes for only one amino acid</p> Signup and view all the answers

Which mechanism ensures that an mRNA is read in the correct reading frame?

<p>Ribosomal scanning</p> Signup and view all the answers

What is the role of mRNA in the Central Dogma process?

<p>Codes for the amino acid sequence of a protein</p> Signup and view all the answers

Which of the following is a characteristic of the Genetic Code?

<p>Universal and degenerate</p> Signup and view all the answers

In the context of Mutations, what are Point Mutations?

<p>Changes in single nucleotides of DNA</p> Signup and view all the answers

What is the main exception to the Central Dogma process?

<p>RNA can convert into DNA independently</p> Signup and view all the answers

How is Translation related to the Central Dogma process?

<p>It synthesizes proteins using information from mRNA</p> Signup and view all the answers

What term describes the property of the genetic code that allows multiple codons to code for the same amino acid?

<p>Redundant</p> Signup and view all the answers

Which of the following is NOT one of the five properties of the genetic code?

<p>Overlapping</p> Signup and view all the answers

Which type of mutation results from a small number of base changes in an organism's DNA?

<p>Point mutation</p> Signup and view all the answers

In the Central Dogma, what does the term 'genotype' refer to?

<p>DNA sequence of an organism</p> Signup and view all the answers

'Exceptions to the Central Dogma' primarily refer to processes where:

<p>Genetic information flows in reverse direction</p> Signup and view all the answers

During translation, the mRNA base triplets are read in the 3' to 5' direction.

<p>False</p> Signup and view all the answers

Reverse transcriptase synthesizes RNA from a DNA template in the process of information flow.

<p>False</p> Signup and view all the answers

Each codon specifies the addition of only one of 64 amino acids.

<p>False</p> Signup and view all the answers

Multiple codons code for the same amino acid due to the property of the genetic code called ambiguity.

<p>False</p> Signup and view all the answers

Alleles of the same gene have different DNA sequences but produce proteins with identical amino acid sequences.

<p>False</p> Signup and view all the answers

The central dogma of molecular biology states that RNA codes for DNA.

<p>False</p> Signup and view all the answers

Point mutations occur at the chromosome level.

<p>False</p> Signup and view all the answers

Exceptions to the Central Dogma always involve the flow of information from DNA to proteins.

<p>False</p> Signup and view all the answers

The genetic code is characterized by having only one codon for each amino acid.

<p>False</p> Signup and view all the answers

In the context of mutations, chromosome-level mutations always result in a change in an organism's phenotype.

<p>False</p> Signup and view all the answers

The genetic code is specific to each organism and varies significantly from one species to another.

<p>False</p> Signup and view all the answers

Genes can be transcribed and translated after being transferred from one species to another.

<p>True</p> Signup and view all the answers

Point mutations involve large-scale changes in an organism's DNA.

<p>False</p> Signup and view all the answers

The genetic code is non-redundant, meaning each codon uniquely corresponds to a single amino acid.

<p>False</p> Signup and view all the answers

Exceptions to the Central Dogma primarily involve processes where information flows from proteins back to DNA.

<p>False</p> Signup and view all the answers

The genetic code is ambiguous because each codon only codes for one amino acid.

<p>False</p> Signup and view all the answers

During translation, the start codon also codes for the initiation of protein synthesis.

<p>True</p> Signup and view all the answers

All 64 codons code for different amino acids in the genetic code.

<p>False</p> Signup and view all the answers

Mutations only occur at the nucleotide level and never at the chromosome level.

<p>False</p> Signup and view all the answers

The Central Dogma states that information flows from protein to gene to mRNA.

<p>False</p> Signup and view all the answers

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