Types of modifying phrases

1. Absolute phrase: a word group that modifies a whole clause or sentence. Absolute phrases usually consist of a noun followed by a participle or participial phrase. a. He was known to have written, cigarette in mouth, for hours at a time.  2. Appositive phrase: a noun or a noun phrase that renames a nearby noun or pronoun. a. I often read Sylvia Plath’s The Bell Jar, my favorite novel.  3. Prepositional phrase: a phrase beginning with a preposition and ending with a noun or noun equivalent (called the object of the preposition). a. To the hikers, the brief shower was a welcome relief.  4. Participial phrase: a phrase beginning with a present or past participle and its objects, complements, or modifiers. a. *Hint: A present participle and a verb form ending in –ing. A past participle is a verb form ending in –d, -ed, -n, -en, or –t. b. Running every day, Anna hoped to improve her cardiovascular health

Bi believe hope this

Okay, biology isn't exactly my strongest subject (it never has been), but i'm pretty sure the answer is nucleotides. dna is made up of nucleotides. each nucleotide contains a phosphate group, a sugar group, and a nitrogen base. there are four different nitrogen bases: adenine (a), thymine (t), guanine (g), and cytosine (c). a always pairs with t, and g always pairs with c.