Match the UNIT 6 Key Terms to their correct definition.
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Column A
Column A
1.
adenine:
adenine
2.
base pairing:
base pairing
3.
cytosine:
cytosine
4.
guanine:
guanine
5.
thymine:
thymine
6.
Inversion mutation:
Inversion mutation
7.
mutagen:
mutagen
8.
mutation:
mutation
9.
point mutation:
point mutation
10.
chromosomal mutation:
chromosomal mutation
Column B
Column B
a.gene mutation in which a single base pair in DNA has been changed
b.Principle that bonds in DNA and between RNA molecules can form only between complimentary bases
c.chromosomal mutation that flips a segment of the chromosome
d.one of four nitrogenous bases found in DNA and RNA; pairs with cytosine
e.one of four nitrogenous bases found in DNA and RNA; pairs with guanine
f.one of four nitrogenous bases found in DNA and RNA; pairs with thymine or uracil
g.chemical or physical agents in the environment that interact with DNA and may cause a mutation
h.a change in the DNA
i.
a change in number of chromosomes or a large amount of DNA in an organism
j.nitrogenous base found in DNA but not in RNA
Question 19
A child is born with cystic fibrosis, an inherited recessive disorder. No one in the family (on either side) for several generations is known to carry the gene or have the disorder. How can this be explained?
a
The genetic disorder formed from the mother's poor nutrition and prenatal care.
b
There was a mutation in the DNA, either in one of the gametes or the fertilized egg.
c
The child contracted the illness from another child when he was born.
d
The child developed the disorder when he was born; it is a result of a birth defect.
The correct matching of UNIT 6 Key Terms to their definitions is:
1. adenine: one of four nitrogenous bases found in DNA and RNA; pairs with thymine or uracil
2. base pairing: Principle that bonds in DNA and between RNA molecules can form only between complimentary bases
3. cytosine: one of four nitrogenous bases found in DNA and RNA; pairs with guanine
4. guanine: one of four nitrogenous bases found in DNA and RNA; pairs with cytosine
5. thymine: one of four nitrogenous bases found in DNA and RNA; pairs with adenine
6. Inversion mutation: chromosomal mutation that flips a segment of the chromosome
7. mutagen: chemical or physical agents in the environment that interact with DNA and may cause a mutation
8. mutation: a change in the DNA
9. point mutation: gene mutation in which a single base pair in DNA has been changed
10. chromosomal mutation: a change in number of chromosomes or a large amount of DNA in an organism