30 Questions
What is the primary goal of genetic engineering?
To identify and insert desirable traits in another organism
Which of the following is NOT an area where biotechnology is mostly used?
Astronomy
What is the full form of the acronym 'BT' in 'BT Plants'?
Bacillus thuringiensis
What is the purpose of introducing the gene responsible for producing harmful proteins to plants?
To make the plants insect-repellant
What is the purpose of biofortification in the context of Golden rice?
To increase the nutritional value of rice
Which of the following is the most common gene editing tool used in genetic engineering?
CRISPR
What is the term used to describe the introduction of a new habitat without a living organism of the same species?
Founder effect
What is the genetic condition that is more prevalent in the Tristan da Cunha islands due to the founder effect?
Retinitis pigmentosa
What is the key characteristic of polygenic traits?
They are caused by changes in a number of genes.
How did the founder effect contribute to the prevalence of retinitis pigmentosa in the Tristan da Cunha islands?
The founders were all carriers of the recessive allele for retinitis pigmentosa.
What is the key factor that contributes to the persistence of genetic mutations in the Amish community?
The Amish are isolated and typically marry within their own community.
Which of the following is an example of a polygenic trait?
Height
What is the main difference between natural and artificial selection?
Natural selection is a slow and long process, while artificial selection is fast.
What does genetic drift refer to?
Genetic drift is the change in allele frequencies due to chance events.
How does genetic drift affect small populations?
Genetic drift can cause big changes in allele frequency over time in small populations.
What is the significance of fixation in genetics?
Fixation eliminates alleles from the population.
Why is genetic drift not exactly replicable in degree?
Genetic drift involves random events and is not precisely predictable.
In what way does artificial selection differ from natural selection?
Artificial selection involves favoring desired characters, unlike natural selection.
What is a common symptom of Ellis-van Creveld syndrome?
Extra fingers or toes
What does the founder effect contribute to in the case of Ellis-van Creveld syndrome among the Amish?
Higher prevalence of the syndrome
What does a phylogenetic tree represent?
Actual evolutionary history of organisms
What is the main purpose of a cladogram?
To show relationships based on attributes
How can one interpret species relationship in a phylogenetic tree?
The closer lines are, the more closely related the species
Which term refers to the process by which populations evolve to become distinct species?
Speciation
What is the main purpose of taxonomy?
To classify organisms based on their similarities
What is a dendrogram?
A two-dimensional diagram representing the relationships among organisms
Which of the following is NOT a reason why systematics is important?
It helps in determining the genetic code of organisms
What is the main characteristic of artificial classification?
It is based on one or a few easily observable characteristics
Which of the following statements about comparative biochemistry is true?
The nucleic acids in almost all organisms have the same genetic code
What is the difference between taxonomy and systematics?
Taxonomy is the science of classification, while systematics is the science of identifying evolutionary relationships
Test your knowledge on the technology based on biology known as biotechnology. Explore how theories and concepts in Biological Sciences are applied to improve various aspects of our lives, focusing on different areas such as medicine, agriculture, biofuels, and genetics.
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