Which of the following is true about mutations? mutations always bring about changes to the organism's traits
a mutation is an exact copy of a gene
mutations can be beneficial, harmful, or have no effect on an organism
mutations happen when the sequence of bases change in the organism's DNA
mutations are always harmful to an organism
mutations can occur naturally
mutations always directly affect an organism's proteins
a mutation is a change in a gene

there is no stairs in bungalow

explanation:

poof

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation:

1) a

2)c

3)a

4)c

5)b

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answer an inhibitory neurotransmitter in the brain;