Select from below all the choices that are correct A. Mutations are always visible. B. Regulatory genes control gene expression C. Bacteria have multiple circular chromosomes D. Mutation can affect a change in phenotype E. Viral genomes are DNA and RNA
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Some mutations may not have any visible effect on the organism. Regulatory genes control gene expression: This statement is true. Regulatory genes play a crucial role in controlling the expression of other genes. Bacteria have multiple circular chromosomes: This Show more…
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Mutations _____. - are random - delete genes from the gene pool - add new genes to the gene pool - are changes in an organism's DNA - can be caused by exposure to radioactive substances
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Mutations are: Heritable changes in the sequence of DNA nucleotides. Heritable changes in the sequence of phospholipids in glycogen. Heritable changes in the sequence of sugars in a polysaccharide. Mistakes in the incorporation of nucleotides into proteins. Mistakes in the incorporation of amino acids into DNA.
"Sometimes during DNA replication a change in the DNA nucleotide sequence, which is called a mutation, can occur. There are various reasons why mutations occur. In certain instances, a chemical called _______ can increase the mutation rate."
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