Column A

1.
adenine:
h
adenine
2.
base pairing:
base pairing
3.
cytosine:
cytosine
4.
guanine:
a
guanine
5.
thymine:
i
thymine
6.
mutagen:
d
mutagen
7.
frameshift mutation:
b
frameshift mutation
8.
point mutation:
f
point mutation
9.
chromosomal mutation:
chromosomal mutation
Column B
a.one of four nitrogenous bases found in DNA and RNA; pairs with cytosine
b.mutation that shifts the “reading frame” of the genetic message by inserting or deleting a nucleotide
c.a change in number of chromosomes or a large amount of DNA in an organism
d.chemical or physical agents in the environment that interact with DNA and may cause a mutation
e.principle that bonds in DNA can form only between adenine and thymine and between guanine and cytosine
f.gene mutation in which a single base pair in DNA has been changed
g.one of four nitrogenous bases found in DNA and RNA; pairs with thymine or uracil
h.one of four nitrogenous bases found in DNA and RNA; pairs with guanine
i.nitrogenous base found in DNA but not in RNA

1. h - adenine: one of four nitrogenous bases found in DNA and RNA; pairs with thymine or uracil

2. e - base pairing: principle that bonds in DNA can form only between adenine and thymine and between guanine and cytosine
3. g - cytosine: one of four nitrogenous bases found in DNA and RNA; pairs with guanine
4. h - guanine: one of four nitrogenous bases found in DNA and RNA; pairs with cytosine
5. i - thymine: nitrogenous base found in DNA but not in RNA
6. d - mutagen: chemical or physical agents in the environment that interact with DNA and may cause a mutation
7. b - frameshift mutation: mutation that shifts the “reading frame” of the genetic message by inserting or deleting a nucleotide
8. f - point mutation: gene mutation in which a single base pair in DNA has been changed
9. c - chromosomal mutation: a change in number of chromosomes or a large amount of DNA in an organism