Chapter 12 and 13 Review

Human Genetics and DNA Technology

Gene therapy currently

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25% 25%25%25%1. can be used to treat certain diseases, such as cystic fibrosis

2. can be used to cure certain diseases, such as cystic fibrosis

3. provides cures for diseases that can be passed on to the next generation

4. All of the above

DNA technology is being used to produce medicines by

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20% 20% 20%20%20%1. growing genetically engineered bacteria and collecting human DNA that they produce

2. growing genetically engineered bacteria and collecting human proteins that they produce

3. Neither A or B4. Both A and B 

In gel electrophoresis, DNA fragments migrate toward one end of a gel because they are

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25% 25%25%25%1. pulled toward that end

by gravity2. attracted to

complementary DNA fragments at that end of the gel

3. Negatively charged and the end of the gel is positively charged

4. Solar powered

Many of the pharmaceutical products being produced by DNA technology are

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25% 25%25%25%1. Carbohydrates2. Lipids3. Polysaccharides4. Proteins

When the human body mobilizes its defenses against a pathogen, the body recognizes the

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25% 25%25%25%1. DNA2. Surface proteins 3. Self markers4. Genome

DNA technology is being used to develop crop plants that are

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20% 20% 20%20%20%1. less toxic to the pests that normally feed on them

2. more susceptible to herbicides

3. unable to fix nitrogen

4. resistant to some diseases

5. A, B, and C are correct

Scientists have inserted genes into tomato plants that code for

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25% 25%25%25%1. enzymes that cause tomatoes to become soft without ripening

2. enzymes that are harmful to hornworms

3. substances that cause allergies in people

4. proteins that make tomato plants resistant to nitrogen-fixing bacteria

Some people are concerned that genetically engineered crop plants could

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25% 25%25%25%1. transmit their new genes to wild plant species, producing “superweeds”

2. transmit their new genes to the animals that eat the plants, producing “superanimals”

3. exchange genes with animals, producing plant-animal hybrids

4. be wiped out by native plant species

Genetically engineered vaccines

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25% 25%25%25%1. contain DNA from pathogens

2. are used to cure disease

3. are not as safe as traditionally prepared vaccines

4. All of the above

This is characterized by a DNA sample of genes arranged on a microscope slide

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25% 25%25%25%1. Microarray2. Genetic engineering3. Proteomics4. Gel electrophoresis

This is characterized by using gel electrophoresis to separate proteins.

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25% 25%25%25%1. Microarray2. Genetic engineering3. Proteomics4. Gel electrophoresis

What is the correct order of steps for DNA fingerprinting?

A. a,b,c,dB. b,a,d,cC. c,a,b,dD. b,d,a,c

25% 25%25%25%

What are all the chromosomes except the sex chromosomes called?

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25% 25%25%25%1. X chromosome2. Y chromosome3. Autosomes4. Microsomes

Who discovered the sex chromosomes?

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20% 20% 20%20%20%1. Flemming2. Sutton3. Morgan4. Mendel5. Johannsen

Crossing over

A. occurs during synapsisB. occurs between

homologous pairs of chromosomes

C. contributes greater variety to the gametes

D. changes chromosomes as they pass from one generation to the next

E. all of the aboveoccu

rs durin

g synapsis

occurs

between homolo...

contri

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reate

r vari

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change

s chro

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s...

all of t

he above

20% 20% 20%20%20%

What is erythroblastosis fetalis?

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25% 25%25%25%1. When baby is Rh + and mom is Rh-

2. White blood cells explode

3. Only happens in the mother

4. When the baby is Rh- and mom is Rh+

What is the genotype of a person who can not taste the PTC paper?

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25% 25%25%25%1. TT2. Tt3. TT and Tt4. tt

What is an example of a multiple allele trait?

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25% 25%25%25%1. Colorblindness2. Hemophilia3. Muscular

dystrophy4. Blood type

Which of the following trait(s) is/are affected by testosterone?

1 2 3 4 5 6 7 8

12% 12% 12% 12%12%12%12%12%1. Down syndrome2. PKU3. Baldness4. Breast

development5. Both 3 and 46. Both 2 and 37. Both 1 and 28. Both 1 and 4

Which of the following are genotypes for a non-bald (normal haired) female?

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25% 25%25%25%1. bb2. Bb3. Both Bb and bb4. BB

What condition causes the presence of an extra chromosome?

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25% 25%25%25%1. Monosomy2. Turner’s

syndrome3. Gene syndrome4. Trisomy

Skin color, eye color, and weight are all examples of

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25% 25%25%25%1. Recessive traits2. Dominant trait3. Polygenic trait4. Multiple alleles

A person with type O blood can never have offspring with type _____ blood.

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20% 20% 20%20%20%1. A2. B3. AB4. O5. A,B,AB, and O

What does agglutinate describe?

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25% 25%25%25%1. Antigens on the red blood cell

2. Antibodies in the blood serum

3. Clumping of the blood

4. Functions of the red blood cells

What disease causes excess mucus to build up in the lungs?

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25% 25%25%25%1. Huntington’s2. Cystic Fibrosis3. Hemophilia4. PKU

What disease is a sex-linked blood-clotting disorder?

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25% 25%25%25%1. Huntington’s2. Cystic Fibrosis3. Hemophilia4. PKU

What disease is characterized by the degeneration of muscles?

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25% 25%25%25%

1. Huntington’s2. Muscular dystrophy3. Klinefelter’s4. PKU

What disease is characterized by the deterioration of brain tissue during infancy?

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25% 25%25%25%1. Huntington’s2. Muscular dystrophy3. Klinefelter’s4. PKU

What disorder is known to be caused by an extra copy of an X chromosome, resulting in XXY

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25% 25%25%25%1. Huntington’s2. Muscular dystrophy3. Klinefelter’s4. PKU

Type O blood is considered the universal donor because

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25% 25%25%25%

1. it is homozygous dominant2. it contains both A and B antigens3. it is heterozygous4. it does not contain A or B antigens

Identify this type of inheritance: A man and a woman have the same genotype for pattern baldness, but only the man exhibits the baldness phenotype

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25% 25%25%25%

1. Y linked trait2. X linked trait3. Sex influenced trait4. Sex linked trait

The purpose of amniocentesis is

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25% 25%25%25%

1. To repair genetic defects in a fetus2. To determine a couple’s genetic

compatibility3. To test for certain genetic abnormalities in a

fetus4. To test the reflexes of the fetus

If a heterozygous female marries a color-blind male, what are the chances of them having a son with normal vision?

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25% 25%25%25%KEY: H = normal vision

h = color-blindness

1. 1/2 2. 1/4 3. 1/14. 0

If a color-blind female marries a normal vision male, what will be the expected phenotypic ratio of their offspring?

KEY: H = normal vision

h = color-blindness

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25% 25%25%25%

1. 1:12. 2:13. 3:14. 4:0

A normal human sperm cell will contain

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25% 25%25%25%1. 22 autosomes and an X or Y chromosome2. 22 autosomes and an X chromosome3. 44 autosomes and an X or Y chromosome4. 44 autosomes and a Y chromosome

What Genetic disorder does this family have?

A. Autosomal dominantB. Autosomal recessiveC. Sex-linked dominantD. Sex-linked recessiveE. Polygenes

20% 20% 20%20%20%