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Why are some DNA mutations sometimes not dangerous, and which type of mutations are these likely to be?

The DNA code is degenerate, which means that a single amino acid can be coded for by more than one sequence of three bases. Some mutations, including substitution, may result in the same amino acid being pro...
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Answered by Patrick O. • Biology tutor
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What is the function of the mitochondria?

The primary role of the mitochondria is to produce the energy currency of the cell, ATP, through respiration, and to regulate cellular metabolism. The processes involved in ATP production are collectively kn...
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Answered by Jack H. • Biology tutor
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Describe the process of primary succession

Primary succession is the change in an ecosystem from bare ground to a stable, complex ecosystem. Pioneer species are the first to colonise this bare ground, with adaptations to the harsh, low-nutrient condi...
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Answered by Max R. • Biology tutor
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What is the difference between mitosis and meiosis

Mitosis is a type of cell division that results in two daughter cells being genetically identical to their parentMeiosis is a type of cell division that results in two daughter cells with different genetic m...
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Answered by Cecilia O. • Biology tutor
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Why do some mutations to DNA structure not result in a change of the produced polypeptide?

This is a question which candidates would be expected to recall knowledge about the degenerate nature of the genetic code. A degenerate genetic code means that more than one codon can result in the same amin...
Answered by • Biology tutor
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