PLEASE HELP! Which of the following mutations would be most likely to have a harmful effect on an organism? A. a deletion of a guanine base near the center of an intron

B. a substitution of a thymine for an adenine

C. a deletion of 3 bases near the center of a gene

D. an insertion of a cytosine base near the start of an exon

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

Hybrid instruments that play sounds that are part sampled and part synthesized are known as:

All annelids and arthropods have a blank body plan . unlike annelids, arthropods also have blank . the circulatory system of annelids is blank , while circulatory system of arthropods is blank .