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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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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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What is osmosis?

To understand osmosis, first you need to understand water potential. Pure water has a water potential of 0, and as it becomes less pure (due to things dissolving in the water) the water potential goes down i...
Answered by • Biology tutor
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