6) when dna is copied, sometimes a new, incorrect, base pairing appears within the structure of a new dna molecule replacing original base pairs. this mistake is called a base-pair a) deletion. b) insertion. c) institution. d) substitution.

D) substitution.

Explanation:

Substitution mutations are those in which one base pair is replaced by another base pair; they are called transition when substitution occurs between bases of the same class, purine to purine (A - G) and pyrimidine to pyrimidine (T - C); and transverse, when the substitution is between bases of different class, purine for pyrimidine and pyrimidine for purine.

which are post-impressionist paintings? check all that apply?

explanation:

post-impressionism is a predominantly french art movement that developed roughly between 1886 and 1905, from the last impressionist exhibition to the birth of fauvism. post-impressionism emerged as a reaction against impressionists' concern for the naturalistic depiction of light and color.

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they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b