The Eukaryotic Cell Cycle

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The geneticists carried out a random

approach by exposing yeast cells to a mutagenic chemical or ionising radiation at a concentration, where it would damage DNA. This can lead to loss of activity through alteration of protein structure. If the random mutations results in the loss of activity of an essential coding gene, the mutation is known as

. Sometimes mutations only lead to a serious change in protein structure when the growth

is raised. These are called

mutations. The temperature, which causes the protein to collapse is known as

temperature.



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