TOPIC TEST (2) 88%

Which best describes a benefit of using DNA technology in medicine? Medicine can be produced in mass quantities. Medicine can be distributed at a reduced cost. Medicines have fewer side effects. Medicines are resistant to antibiotics.

The pedigree chart below shows the inheritance of a trait in a family of cats. mc018-1.jpg Which pair of individuals represents a mating that will result in inbreeding? individuals 1 and 6 individuals 3 and 4 individuals 3 and 6 individuals 6 and 14

Frank and Maria both had normal vision. After they married, they had two daughters and a son. Both daughters had normal vision and never had children. Marco, the son, was color blind. He married Lauren, who had normal vision. Marco and Lauren had two children, Caleb and Molly. Caleb was not color blind, but Molly was. Color blindness is a sex-linked trait (carried on the X chromosome). The diagram below shows the family tree. mc023-1.jpg Which statement about this family's pedigree is correct? Marco carried the gene for color blindness, but Lauren did not. Lauren carried the gene for color blindness, but Marco did not. Marco and Lauren both carried genes for color blindness. Frank and Caleb both carried genes for color blindness.

The cost of providing care for individuals who develop all the symptoms of a genetic disorder can be very high. However, if proper treatment is given early enough in an affected person's life, many of the most devastating health problems may not develop. One way that scientists could help reduce the cost of caring for a person who has a genetic disorder is to develop lists of people who have a genetic disorder. find ways to raise money to pay for medical treatments. discover better methods of early detection of genetic disorders. recommend lawyers to people who have genetic disorders in their families.

Why might scientists be interested in making transgenic organisms? Transgenic organisms glow in the dark and provide a light source in dark places. Transgenic organisms can produce a desired product that may benefit other organisms. Transgenic organisms can be used to cut strands of DNA molecules into fragments. Transgenic organisms can be used as a medium to transfer foreign DNA into a host cell.

Which DNA fingerprinting technique examines the length variation of DNA repeat sequences in human DNA? VNTRs (variable tandem repeats) PCR (polymerase chain reaction) analysis STRs (short tandem repeats) mtDNA (mitochondrial DNA) analysis

The process of genetic engineering may include either four or five steps. The diagram represents the five-step process. mc010-1.jpg Which best describes step 2? Restriction enzymes cut the DNA into fragments; the fragments join with the host DNA to create recombinant DNA. Recombinant DNA is inserted into a biological vector; the vector houses the recombinant DNA and is capable of creating copies of DNA for itself and the recombinant DNA. Cloning of the recombinant DNA occurs; the DNA is cloned in the biological vector to create more DNA for use in the host. Recombinant DNA is inserted into a mechanical vector; the mechanical vector allows the DNA to be inserted into the DNA clone for use in the host.

Which of these would a genetic counselor most likely make for work? a cloned gene a family pedigree a Punnett square a hybrid rosebush

Which statement best explains why the process of genetic engineering is important to the scientific community? Genetic engineering provides crops that are less expensive to grow. Genetic engineering is a research tool that can advance the usefulness of recombinant DNA. Genetic engineering provides an increased cost to laboratory work resulting in more advances. Genetic engineering can enhance the taste of food for consumers.

Parkinson's disease is a brain disorder that may be caused by mutations in several genes that code for the production of alpha-synuclein. Individuals who have Parkinson's disease exhibit symptoms such as uncontrollable tremors, difficulty walking, and loss of coordination. How might geneticists determine where the mutations that cause Parkinson's disease are located? PCR analysis gene mapping DNA fingerprinting STR analysis

Breeders can use a Punnett square, such as the one below, to predict the outcome of a genetic cross. mc008-1.jpg If the genotype of both parents was Aa, what would be expected of the genotypes among their possible offspring? Half would have the genotype AA. Half would have the genotype Aa. Three-quarters would have the genotype aa. Three-quarters would have the genotype Aa.

A person must earn at least a Master's degree to work as a genetic counselor. Which subject must a person understand to be a genetic counselor and why? literature, to better write materials for clients chemistry, to do research on new medicines history, to describe information from the past statistics, to interpret trends in available data

Carlos is studying thalassemia, a genetic blood disorder that occurs among people of Mediterranean descent. The disorder causes the body to make abnormal hemoglobin, the oxygen carrier in the blood. Carlos wants to use the pedigree below to learn about the patterns of inheritance of thalassemia. mc020-1.jpg Which statement describes the pattern of inheritance for thalassemia? The allele for thalassemia is dominant and is found on an autosome. The allele for thalassemia is recessive and is found on an autosome. The allele for thalassemia is found on a Y sex chromosome. The allele for thalassemia is found on an X sex chromosome.

Which of the following could be a result of selective breeding? corn having potato offspring higher yield in corn reproduction rose bushes that grow without water pine trees that never produce seeds

Scientists have recently modified the bacteria that cause tooth decay by inserting a fragment of DNA into the bacteria's DNA that prevents it from producing lactic acid. What is this process called? genetic engineering biological vector mechanical vector electrophoresis

A young boy has been found, and police are trying to locate his family. They take a DNA sample from him and begin collecting DNA samples from families who have missing children. If police use DNA samples only from the fathers, which type of DNA technology can they use to identify the boy's parent? Y-chromosome analysis mtDNA (mitochondrial DNA) analysis VNTRs (variable tandem repeats) PCR (polymerase chain reaction) analysis

The pedigree chart below shows the inheritance of a genetic trait in a line of sheep. mc017-1.jpg If sheep 7 was to have offspring, in which generation would the offspring be? first second third fourth

Certain breeds of pets have weaknesses and live shorter lives because of inbreeding. reproduction. genetic diversity. natural selection.

Which genetically engineered hormone is used to control glucose levels in humans? insulin flu shot penicillin human growth hormone

Which career combines DNA technology and agriculture? pharmaceuticals paternity testing nutriceuticals genetics

Which is a mechanical vector that injects recombinant DNA directly into the nucleus of a host cell? gene gun micropipette bacterial plasmid viral phage

Which is an example of selective breeding? Planting peas in a garden one year and planting green beans the next year to enrich the soil. Transferring pollen from flowers on one pea plant to flowers on another pea plant. Comparing pea plants that have white flowers to green bean plants that have white flowers. Grinding the peas from a pea plant into flour to create new food products.

Polydactyly, having extra fingers or toes, is an autosomal dominant disorder that occurs in cats as well as in humans. A cat breeder collects information about her cats and makes the pedigree below. mc018-1.jpg If the breeder wants to select a mother cat to produce a litter of kittens without polydactyly, which cat could she choose? cat 2 or 9 cat 3 or 6 cat 4 or 5 cat 6 or 8

The pedigree chart below shows the inheritance of a genetic disorder in three generations of one species of insect. Shaded shapes represent individuals that have the disorder. mc022-1.jpg Which mates are least likely to produce offspring that have the disorder? male 1 and female 2 male 3 and female 4 male 5 and female 6 male 9 and female 10

One way that a genetic counselor is able to help someone who has a genetic disorder and might want to have children in the future is to describe how the disorder is inherited and treated. prescribe the correct medicine for treating the disorder. select the best method of fertility treatments for the patient. advise a family to pursue adoption instead of becoming pregnant.