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Biology - Chapter 14

Terms in this set (8)

9. Cystic fibrosis can be caused by...
A). nondisjunction of an autosome
B). a change of three base pairs in DNA
C). nondisjunction of a sex chromosome
D). deletion of an entire gene from a chromosome.
C). a change of three base pairs in DNA
1. Which of the following disorders can be observed in a human karyotype?
A). colorblindness
B). trisomy 21
C). cystic fibrosis
D). sickle cell disease
B). trisomy 21
2. Which of the following disorders is a direct result of nondisjunction?
A). sickle cell disease
B). Turner's syndrome
C). Huntington's disease
D). cystic fibrosis
C). Turner's syndome
3. A woman is homozygous for A- blood type. A man has AB- blood type. What is the probability that the couple's child will have type B- blood?
A). 0%
B). 50%
C). 75%
D). 100%
A). 0%
4. Cystic fibrosis is a genetic disorder caused by a ...
A). single base substitution in the gene for hemoglobin
B). deletion of an amino acid from a chloride channel protein
C). defective gene found on the X chromosome
D). trisomy of chromosome 21
C). deletion of an amino acid from a chloride channel protein
5. The technique used to separate DNA strands of different lengths is...
A). gel electrophoresis
B). shotgun sequencing
C). restriction enzyme digestion
D). bioinformatics
A). gel electophoresis
6. The study of whole genomes, including genes and their function, is called...
A). bioinformatics
B). information science
C). life science
D). genomics
D). genomics
7. DNA can be cut into shorter sequences by proteins known as...
A). haplotypes
B). polymerases
C). restriction enzymes
D). restriction fragments
C). restriction enzymes
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