Microbiology
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Ames test | identify which chemicals cause mutation
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| Carcinogens | chemicals capable of causing mutations that lead to cancer
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| Constitutive system | when a system is mutationally always turned on and can't be turned off
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| Frame-shift deletions | cause the letters of the codon to be completely out of register so that the words are lost from that point onward
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| Genotype | genetic sequences of the cell
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| Genotypic changes | functional losses--measured by changes in the DNA sequence
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| Heritable | mutations passed on to future generations--may be detrimental by disrupting functions of proteins for which they code--may prove beneficial to the cell
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| Induced mutations | mutations caused by man-made mutagens
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| In-frame deletions | deletions that remove 3 nucleotides (or multiples of 3)--result in the loss of one or more amino acids--sequence that occurs after deletion still in correct register or frame
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| Insertions | result in same type of changes as deletions
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| Lactose auxotroph | cells that carry mutations that change phenotypes--cell that no longer utilize lactose
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| Mutagens | chemicals and other factors not normally found in nature that alter DNA sequence
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| Mutations | change in DNA sequence
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| Nonsense mutations | convert a coding triplet into a stop codon, so the protein terminates prematurely
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| Phenotype | physical characteristics--implies that the cells are unable to metabolize lactose--defective gene, however is unknown
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| Rearrangements | part of the DNA sequence is moved to a new location
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| Regulatory mutations | Since this kind of mutational control occurs outside of structural genes that are affected
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| Spontaneous mutations | mutations that occur by mistakes in DNA synthesis or by exposure to ultraviolet rays from rays from things such as sunlight or tanning lights
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| Structural genes | gene sequences that code for actual proteins
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| Substitution mutations | likely to change whichever amino acids is located at the corresponding protein position
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
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Created by:
heatherlvn
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