Biology Test G

1. Human males have

Two Y chromosomes

Two X chromosomes

One X and one Y chromosome

Two Y and one X chromosome

2. Which of the following combinations of sex chromosomes represents a female?

XY

XXY

XXXY

XX

3. According to Figure 14–1, what is the approximate probability that a human offspring will be female?

10%

25%

50%

75%

4. How many generations are shown in the pedigree in Figure 14–5?

2

4

6

8

5. How many chromosomes are shown in a normal human karyotype?

2

25

44

46

6. The Human Genome Project is an attempt to

Sequence every person’s DNA

Sequence the DNA of every human gene

Cure infectious human diseases

Identify all restriction enzymes

7. The process of changing the DNA code of an organism is called

Sex linked inheritance

Genetic engineering

Inbreeding

Hybridization

8. If the allele for having dimples is dominant, family members WITHOUT dimples are

Homozygous recessive

Heterozygous

Homozygous dominant

Trisomal

9. The failure of chromosomes to separate during meiosis is called

Nondisjunction

X-chromosome inactivation

Turner’s syndrome

Down syndrome

10. To create animals that have the characteristics of both species, some people have bred buffalo and cattle together. This is an example of

Nondisjunction

Selective breeding

Genetic engineering

Transformation

11. 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?

PP

Pp

P

12. 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?

She has two alleles for the disorder

She has one allele for the disorder

She has no alleles for the disorder

She has the genotype XXY

13. Dolly is a sheep produced by cloning! What is a difference between Dolly and animals produced by sexual reproduction (not by cloning)?

Dolly is genetically identical to her donor parent

Dolly is more genetically diverse than her donor parent

Dolly is genetically identical to her offspring

Dolly has a mix of her parents DNA

14. What does Figure 15–1 represent?

Gel electrophoresis being used to sequence DNA

Hybridization being used to manipulate DNA

An enzyme being used to cut DNA

Polymerase chain reaction being used to copy DNA

15. What is illustrated in Figure 14–7?

Mutation

Dominance

Electrophoresis

Nondisjunction

16. A cat that has spots of more than one color

Has no Barr bodies

Is probably female

Is probably male

Could be male or female

17. Which piece of DNA would move fastest in gel electrophoresis? A segment that is

100 base pairs long

1,000 base pairs long

5,000 base pairs long

100,000 base pairs long

18. Colorblindness is more common in males than in females because the allele for colorblindness is

Located on chromosome 21

Located on the Y chromosome

Located on the X chromosome

Located on an autosomal chromosome

19. Which of the following can be used to cut DNA so it can be studied?

Restriction enzymes

Gel electrophoresis

Karyotypes

Haplotypes

20. Certain drugs can be used in plant breeding to make polyploid plants. These drugs

Change the number of chromosomes found in cells

Change eukaryotic plants into prokaryotic plants

Cause mutations, which create new genes

Insert foreign DNA into plant chromosomes

21. Cows that produce more milk than normal are produced by…

Polyploidy

Hybridization

Inbreeding

Genetic engineering

22. What prevents insurance companies from discriminating against people based on information derived from genetic tests?

Only scientists can read the results of complicated genetic tests

Genetic tests don’t show information about genetic disorders

Discrimination based on genetic information is against the law

People with genetic diseases cannot do business with private insurance companies

Biology Test G

1. Human males have

2.

What first name or nickname would you like us to use?

2. Which of the following combinations of sex chromosomes represents a female?

3. According to Figure 14–1, what is the approximate probability that a human offspring will be female?

4. How many generations are shown in the pedigree in Figure 14–5?

5. How many chromosomes are shown in a normal human karyotype?

6. The Human Genome Project is an attempt to

7. The process of changing the DNA code of an organism is called

8. If the allele for having dimples is dominant, family members WITHOUT dimples are

9. The failure of chromosomes to separate during meiosis is called

10. To create animals that have the characteristics of both species, some people have bred buffalo and cattle together. This is an example of

11. 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?

12. 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?

13. Dolly is a sheep produced by cloning! What is a difference between Dolly and animals produced by sexual reproduction (not by cloning)?

14. What does Figure 15–1 represent?

15. What is illustrated in Figure 14–7?

16. A cat that has spots of more than one color

17. Which piece of DNA would move fastest in gel electrophoresis? A segment that is

18. Colorblindness is more common in males than in females because the allele for colorblindness is

19. Which of the following can be used to cut DNA so it can be studied?

20. Certain drugs can be used in plant breeding to make polyploid plants. These drugs

21. Cows that produce more milk than normal are produced by…

22. What prevents insurance companies from discriminating against people based on information derived from genetic tests?