Biology Test G
- 1.
According to Figure 14–1, what is the approximate probability that a human offspring will be female?
- A.
10%
- B.
25%
- C.
50%
- D.
75%
Correct Answer
C. 50% -
- 2.
How many chromosomes are shown in a normal human karyotype?
- A.
2
- B.
25
- C.
44
- D.
46
Correct Answer
D. 46 -
- 3.
Colorblindness is more common in males than in females because the allele for colorblindness is
- A.
Located on chromosome 21
- B.
Located on the Y chromosome
- C.
Located on the X chromosome
- D.
Located on an autosomal chromosome
Correct Answer
C. Located on the X chromosome -
- 4.
Human males have
- A.
Two Y chromosomes
- B.
Two X chromosomes
- C.
One X and one Y chromosome
- D.
Two Y and one X chromosome
Correct Answer
C. One X and one Y chromosome -
- 5.
A cat that has spots of more than one color
- A.
Has no Barr bodies
- B.
Is probably female
- C.
Is probably male
- D.
Could be male or female
Correct Answer
B. Is probably female -
- 6.
The trait in pedigree in Figure 14–5 has two alleles: P (dominant) and p (recessive). The black symbols show the dominant phenotype, and the white symbols show the recessive phenotype. What is the genotype of individual number 1?
- A.
PP
- B.
Pp
- C.
P
- D.
P
Correct Answer
B. Pp -
- 7.
How many generations are shown in the pedigree in Figure 14–5?
- A.
2
- B.
4
- C.
6
- D.
8
Correct Answer
B. 4 -
- 8.
If the allele for having dimples is dominant, family members WITHOUT dimples are
- A.
Homozygous recessive
- B.
Heterozygous
- C.
Homozygous dominant
- D.
Trisomal
Correct Answer
A. Homozygous recessive -
- 9.
For the pedigree in Figure 14–6, shaded symbols represent afflicted people. Males are squares; women are circles. If the trait is a sex-linked trait carried on the X chromosome, what is true about the mother represented by circle 1?
- A.
She has two alleles for the disorder
- B.
She has one allele for the disorder
- C.
She has no alleles for the disorder
- D.
She has the genotype XXY
Correct Answer
B. She has one allele for the disorder -
- 10.
The failure of chromosomes to separate during meiosis is called
- A.
Nondisjunction
- B.
X-chromosome inactivation
- C.
Turner’s syndrome
- D.
Down syndrome
Correct Answer
A. Nondisjunction -
- 11.
Which of the following combinations of sex chromosomes represents a female?
- A.
XY
- B.
XXY
- C.
XXXY
- D.
XX
Correct Answer
D. XX -
- 12.
What is illustrated in Figure 14–7?
- A.
Mutation
- B.
Dominance
- C.
Electrophoresis
- D.
Nondisjunction
Correct Answer
D. Nondisjunction -
- 13.
Which of the following can be used to cut DNA so it can be studied?
- A.
Restriction enzymes
- B.
Gel electrophoresis
- C.
Karyotypes
- D.
Haplotypes
Correct Answer
A. Restriction enzymes -
- 14.
Which piece of DNA would move fastest in gel electrophoresis? A segment that is
- A.
100 base pairs long
- B.
1,000 base pairs long
- C.
5,000 base pairs long
- D.
100,000 base pairs long
Correct Answer
A. 100 base pairs long -
- 15.
The Human Genome Project is an attempt to
- A.
Sequence every person’s DNA
- B.
Sequence the DNA of every human gene
- C.
Cure infectious human diseases
- D.
Identify all restriction enzymes
Correct Answer
B. Sequence the DNA of every human gene -
- 16.
What prevents insurance companies from discriminating against people based on information derived from genetic tests?
- A.
Only scientists can read the results of complicated genetic tests
- B.
Genetic tests don’t show information about genetic disorders
- C.
Discrimination based on genetic information is against the law
- D.
People with genetic diseases cannot do business with private insurance companies
Correct Answer
A. Only scientists can read the results of complicated genetic tests -
- 17.
To create animals that have the characteristics of both species, some people have bred buffalo and cattle together. This is an example of
- A.
Nondisjunction
- B.
Selective breeding
- C.
Genetic engineering
- D.
Transformation
Correct Answer
B. Selective breeding -
- 18.
Certain drugs can be used in plant breeding to make polyploid plants. These drugs
- A.
Change the number of chromosomes found in cells
- B.
Change eukaryotic plants into prokaryotic plants
- C.
Cause mutations, which create new genes
- D.
Insert foreign DNA into plant chromosomes
Correct Answer
A. Change the number of chromosomes found in cells -
- 19.
What does Figure 15–1 represent?
- A.
Gel electrophoresis being used to sequence DNA
- B.
Hybridization being used to manipulate DNA
- C.
An enzyme being used to cut DNA
- D.
Polymerase chain reaction being used to copy DNA
Correct Answer
C. An enzyme being used to cut DNA -
- 20.
The process of changing the DNA code of an organism is called
- A.
Sex linked inheritance
- B.
Genetic engineering
- C.
Inbreeding
- D.
Hybridization
Correct Answer
B. Genetic engineering -
- 21.
Dolly is a sheep produced by cloning! What is a difference between Dolly and animals produced by sexual reproduction (not by cloning)?
- A.
Dolly is genetically identical to her donor parent
- B.
Dolly is more genetically diverse than her donor parent
- C.
Dolly is genetically identical to her offspring
- D.
Dolly has a mix of her parents DNA
Correct Answer
A. Dolly is genetically identical to her donor parent -
- 22.
Cows that produce more milk than normal are produced by…
- A.
Polyploidy
- B.
Hybridization
- C.
Inbreeding
- D.
Genetic engineering
Correct Answer
D. Genetic engineering -
.png "The trait in pedigree in Figure 14–5 has two alleles: P (dominant) and p (recessive). The black
symbols show the dominant phenotype, and the white symbols show the recessive phenotype.
What is the genotype of individual number 1?")
.png "How many generations are shown in the pedigree in Figure 14–5?")
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Apr 29, 2013Quiz Edited by
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Jun 01, 2012Quiz Created by
Phenominiall
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