WorksheetsHeredity and DNA Technology
Total questions: 33
Worksheet time: 17mins
Black hair color is dominant to white hair color in mice. Interpret the Punnett Square below to determine the expected phenotypic ratio for the offspring of a homozygous black mouse and a white mouse.
4 Black : 0 White
3 Black : 1 White
2 Black : 2 White
0 Black : 4 White
What is the main benefit to using genetically modified organisms, even though their use has sparked an ethical debate around the world?
Humans can produce more insulin naturally.
Fewer pharmaceutical products are produced
Farm products have a more pleasing appearance
Fewer pesticides are released into the environment
What is the main goal of the Human Genome Project?
To find cures for genetic diseases
To find all mutations in humans DNA
To sequence all DNA on human chromosomes
To count the number of genes in human DNA
Opponents of the genetic engineering of plants argue that it is difficult to accurately predict the consequences of plant alterations to the local habitat. Which is the most likely negative outcome of genetic modifications of plants?
Genetically engineered plants would outcompete the local, native plants, causing massive die outs.
Genetically engineered plants that are pest-resistant would reduce the local population of pollinating insects.
Genetically engineered plants that are greener in appearance would be chosen more often as food by consumers
Genetically engineered plants would transfer genes to the local, native plants, creating new species that cannot be killed
Which areas in society are most directly benefiting from the use of transgenic organisms?
politics and economics
education and sports
medicine and agriculture
aerospace and architecture
The diagram below compares the DNA of a newly discovered bird (bird 1) along with four known bird species.
Which bird is least likely related to bird 1?
bird 2
bird 3
bird 4
bird 5
The diagram shows the steps in bacterial transformation. In which step would restriction enzymes most likely be used?
step 1
step 2
step 3
step 4
The diagram of the bacterial cell shows the structures necessary for the creation of a transgenic organism. Which statement correctly identifies the structure labeled as Structure II and describe its role in creating a transgenic organism?
Structure II is a ribosome. The ribosome combines with the host organism's genetic material to create recombinant DNA, which is then inserted into a host organism to create a transgenic organism.
Structure II is a ribosome. The ribosome combines with the host organism's genetic material to create recombinant DNA, which is then inserted into a host organism to create a transgenic organism.
Structure II is a bacterial plasmid. Genetic material is inserted into the plasmid, which is then placed into the cells of another organism where it combines with that organism's chromosomes to create a transgenic organism.
Structure II is a mitochondrion. Genetic material is inserted into the mitochondrion, which is then placed into the cells of another organism where it combines with that organism's chromosomes to create a transgenic organism.
What is one way transgenic organisms are used?
as a tool for breeding
in cataloging endangered species
in the production of human insulin
in the identification of invasive species
Colorblindness is inherited as a sex-linked recessive disease. An affected male marries a female who is heterozygous for the trait. What percentage of their offspring will exhibit colorblindness?
0%
25%
50%
100%
A father without hemophilia has two daughters and two sons. Neither daughter has hemophilia. One son has hemophilia and the other does not. What is the genotype of the mother?
XHXH
XHXh
XHY
XhY
The U.S. Food and Drug Administration has approved the use of cloned animals as food. Which statement describes the main health concern related to their use?
Cloning techniques sometimes lead to malformation in animals, which may cause food to be unsafe.
Cloned animal products will be of lower quality than that of traditional animal products.
Cloned cattle will dominate the market, putting traditional ranchers out of business.
Cloned animals may carry new diseases that go undetected.
Which would be a desirable trait scientists may want to create in a transgenic plant?
the ability to resist insects
the ability to grow less fruit
the ability to change color in the winter
the ability to use a lot of water
What is the function of a restriction enzyme?
to control the movement of proteins into the cell
to regulate blood sugar levels
to produce hormones that regulate digestion
to cut DNA at a specific nucleotide sequence
This diagram shows DNA Fingerprints for a child and four adults. Which adult is most likely a parent of the child?
adult 1
adult 2
adult 3
adult 4
Two heterozygous tall plants (Tt) are crossed. What are the expected genotypes and percentages of his cross?
TT 50%; Tt 50%
TT 25%; tt 75%
Tt 25%; TT 50%; tt 25%
TT 25%; Tt 50%; tt 25%
Cystic Fibrosis is a lethal, autosomal recessive genetic disorder. Which statement BEST explains how cystic fibrosis is maintained in the gene pool?
Organisms that are heterozygous can pass on only the dominant allele
Organisms that are homozygous-dominant pass on either dominant or recessive alleles
Organisms that are heterozygous can pass on either dominant or recessive alleles
Organisms that are homozygous-recessive pass on only the dominant allele
Tay-Sachs disease is a lethal, autosomal recessive disorder. If both parents are heterozygous carriers of the disease, what are the chances of them having a child who is also a heterozygous carrier for Tay-Sachs?
25%
50%
75%
100%
What type of inheritance controls blood types in humans?
Incomplete dominance
polygenic inheritance
multiple alleles
recessive genes
Which of the following is an example of sex-linked inheritance?
diabetes
cystic fibrosis
hemophilia
albinism
Gregor Mendel cross-pollinated red and white snapdragon flowers. What information indicates that incomplete dominance was achieved?
The offspring had heterozygous alleles
The offspring had a recessive allele
The offspring were pink
The offspring were red
Sickle cell anemia is an autosomal recessive disorder. If each parent carries one sickle cell allele, what are the chances that their child will have sickle cell anemia?
no chance
1 in 4
2 in 4
3 in 4
In 2003, the Human Genome Project identified all of the DNA bases present on human chromosomes. The identification was aided by advances in sequencing technology which allowed longer strands of DNA to be sequenced more quickly. The knowledge gained through sequencing the human genome will MOST likely lead to scientific advancements in which of the following fields?
genetic disorders
gamate formation
tissue differentiation
chromosome replication
Stem cells differentiate into a variety of specialized cell types. Stem cells in adult organisms function as repair systems. Based on this information, future stem cell research will MOST likely be focused on which of the following?
using stem cells to cure diseases
using stem cells to create new life forms
using stem cells to correct DNA mismatches
using stem cells to increase the rate of cell growth in organisms
Scientists have developed a strain of bacteria that can manufacture human insulin. What scientific technology did they use to make this new form of bacteria?
computer animation
scanning electron microscopy
genetic engineering
nuclear magnetic resonance imaging
A scientist is developing a new genetically modified potato. The potato will be able to resist freezing. The scientist's goal is to develop the potato in an ethical way that will not threaten humans of the environment. Which of the following would BEST allow the scientist to meet this goal?
Develop and safety test all modified potatoes in controlled, indoor facilities.
Share modified potatoes so that labs around the world can help safety test them.
Grow and safety test modified potatoes outdoors in only the coldest environments
Provide modified potatoes to farmers to grow and safety test in their agricultural fields.
Maggie is a transgenic goat. How does being transgenic make Maggie different from non-transgenic goats?
Maggie has DNA from both of her parents
Maggie has DNA that winds around proteins
Maggie has DNA implanted from another organism
Maggie has DNA that uses a different coding system
Police are trying to identify the person who left behind a blood stain during a burglary. They have identified four possible suspects, and submitted DNA samples from each suspect to the crime lab for comparison to the blood sample DNA. The crime lab produced this image of the DNA fingerprinting analysis. Which suspect MOST LIKELY left behind the blood stain?
suspect #1
suspect #2
suspect #3
suspect #4
When genetic engineers create artificial plasmids for use in recombinant DNA applications, they include a start signal, a cutting site for a common bacterial restriction enzyme, and at least one antibiotic resistance gene. What is the purpose for including antibiotic resistance genes in artificial plasmids?
They protect the bacteria from any antibiotic that might accidentally be introduced into the culture.
They increase the chances that a bacterium will take up the plasmid and incorporate it into its own DNA
They act as genetic markers to identify bacteria that have taken up the plasmids from their environment.
They enable the bacteria to produce antibiotics that eliminate all the nonresistant bacteria growing nearby.
Shaded individuals in this pedigree express a particular trait.
Based on this pedigree, what is the mode of inheritance of the trait?
autosomal dominant
autosomal recessive
sex-linked dominat
sex-linked recessive
Shaded individuals in this pedigree express a particular trait. Based on this pedigree, what is the mode of inheritance of the trait?
autosomal dominant
autosomal recessive
sex-linked dominant
sex-linked recessive
Shaded individuals in this pedigree express a particular trait. Based on the pedigree, what is the mode of inheritance of the trait?
sex-linked dominant
sex-linked recessive
autosomal dominant
autosomal recessive
Eye color in human beings is an
instinct
acquired trait
inherited trait
environmentally influenced trait
