Chapter 14 Chapter 14 Interactive ActivityInteractive Activity

The Human GenomeThe Human Genome

Click the button to begin the quiz.Click the button to begin the quiz.

1. How is sex 1. How is sex determined? determined?

A.It is determined before birth.

B.It is determined by the chromosomes given by the mother.

C.It is determined by the chromosomes given by the father.

D.It is determined by accident.

2. How do small changes in 2. How do small changes in DNA cause genetic DNA cause genetic

disorders?disorders? A.It can cause changes in the DNA s

equence.

B.It can cause mutations which are lethal.

C.It can cause changes in the proteins.

D. It can do all of these.

3. Why are sex-linked 3. Why are sex-linked disorders more common in disorders more common in

males than in females?males than in females? A.Males have only 1 X chromosome.

B. Females pass on the sex gene.

C. Males pass on the sex gene.

D. Females have 2 X chromosomes.

4. What is 4. What is nondisjunction?nondisjunction?

A.A. Failure of the heterozygous chromosomes to reFailure of the heterozygous chromosomes to replicate.plicate.

B.B. Failure of the homozygous chromosomes to repFailure of the homozygous chromosomes to replicate.licate.

C.C. Failure of the heterozygous chromosomes to seFailure of the heterozygous chromosomes to separate.parate.

D.D. Failure of the homozygous chromosomes to sepFailure of the homozygous chromosomes to separate.arate.

5. Which problem does 5. Which problem does

nondisjunction cause?nondisjunction cause? A.It can cause Down’s syndrome.

B.It can cause cystic fibrosis.

C.It can cause Huntington’s disease.

D.It can cause color blindness.

6. What is the goal of the 6. What is the goal of the Human Genome Project? Human Genome Project?

A.A. To find out how many chromosomes humans haTo find out how many chromosomes humans have.ve.

B.B. To find out what diseases humans are subject tTo find out what diseases humans are subject to.o.

C.C. To find out where the chromosomes areTo find out where the chromosomes are..

D.D. To find out where and what genes humans haveTo find out where and what genes humans have..

7. 7. What is gene therapy?What is gene therapy?

A.A. It is a way to cure infectionsIt is a way to cure infections..

B.B. It is a technique to diagnose genetiIt is a technique to diagnose genetic diseasec disease..

C.C. It is a technique to replace faulty gIt is a technique to replace faulty genesenes..

D.D. It is a way to cause mutations in geIt is a way to cause mutations in genesnes..

(GQ)8. Which of the following are used to track genetic disorders?A.Pedigree charts

B.Karyotypes

C.DNA Fingerprints

D.Genetic Engineering

(GQ)(GQ)9. Which of the following determines human 9. Which of the following determines human blood groups?blood groups?

A.A. Polygenic traitsPolygenic traits

B.B. Dominant recessive traitsDominant recessive traits

C.C. Codominant traitsCodominant traits

D.D. Multiple allelesMultiple alleles

(GQ)(GQ)9. What is the cause of sickle cell 9. What is the cause of sickle cell disease?disease?

A.A. NondisjunctionNondisjunction

B.B. Point mutationPoint mutation

C.C. PolyploidyPolyploidy

D.D. CodominanceCodominance

(GQ)(GQ)10. Why do males have more sex-10. Why do males have more sex-linked disorders than females?linked disorders than females?

A.A. Males have only 1 X chromosome.Males have only 1 X chromosome.

B.B. Females have only 1 X Females have only 1 X chromosome.chromosome.

C.C. Males have only 1 Y chromosome.Males have only 1 Y chromosome.

D.D. Females have only 1 Y Females have only 1 Y chromosome.chromosome.