In a strand of DNA, a cytosine base has been replaced by guanine. What kind of mutation has occurred?

a. frameshift mutation
b. transition substitution
c. transversion substitution
d. translocation


c. transversion substitution

Biology & Microbiology

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The "9 + 2" pattern of the axoneme is nine ________ of microtubules and two additional microtubules in the center called the ________.

A) outer doublets; central pair B) basal bodies; inner two C) central tubules; double pair D) circular structures; middle two E) triplet groups; basal bodies

Biology & Microbiology

If the DNA sequence is ATG-CGT, the mRNA codons are

a. AUG-CGU. b. ATG-CGT. c. UAC-GCA. d. UAG-CGU. e. GUA-CGU.

Biology & Microbiology

Norman ate his birthday cake with lots of sugary frosting, so his pancreas secreted ________

A) thyroxin B) glycogen C) insulin D) glucagon

Biology & Microbiology

________ are the group of microorganisms composed only of hereditary material wrapped in a protein covering.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology