IB Biology Topic A1.2.10 Conservation of the Genetic Code as Evidence of Universal Common Ancestry Revision Notes (SL/HL)

IB Biology Topic A1.2.10 Conservation of the Genetic Code as Evidence of Universal Common Ancestry Revision Notes (SL/HL) | RevisionDojo

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The Genetic Code Is Universal: The Same Codons Specify the Same Amino Acids

The same codons (three-base sequences) specify the same amino acids in almost all organisms.
There are only a few rare exceptions, such as some mitochondrial codons, but these do not change the overall principle.

Definition

Codon

A codon is a sequence of three nucleotides in DNA or RNA that specifies a particular amino acid or a start/stop signal during protein synthesis.

Example

The codon AUG codes for methionine in bacteria, plants, and animals alike.

A Universal Code Makes Genetic Engineering Possible

Since the genetic code is the same, genetic information is transferable between species.

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(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

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Duis aute irure dolor in reprehenderit

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Note

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Excepteur sint occaecat cupidatat non proident

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Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

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The Genetic Code Is Universal: The Same Codons Specify the Same Amino Acids

The same codons (three-base sequences) specify the same amino acids in almost all organisms.
There are only a few rare exceptions, such as some mitochondrial codons, but these do not change the overall principle.

Definition

Codon

A codon is a sequence of three nucleotides in DNA or RNA that specifies a particular amino acid or a start/stop signal during protein synthesis.

Example

The codon AUG codes for methionine in bacteria, plants, and animals alike.

A Universal Code Makes Genetic Engineering Possible

Since the genetic code is the same, genetic information is transferable between species.

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic A1.2.10: Conservation of the Genetic Code as Evidence of Universal Common Ancestry Notes

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

The Genetic Code Is Universal: The Same Codons Specify the Same Amino Acids

A Universal Code Makes Genetic Engineering Possible

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

The Genetic Code Is Universal: The Same Codons Specify the Same Amino Acids

A Universal Code Makes Genetic Engineering Possible

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account