Podcast
Questions and Answers
What type of adaptation is the production of Antifreeze proteins in cold water fish?
What type of adaptation is the production of Antifreeze proteins in cold water fish?
- Genetic
- Functional (correct)
- Behavioural
- Structural
What is the purpose of classification in biology?
What is the purpose of classification in biology?
- To identify adaptations in an organism
- To group organisms based on their features and genes (correct)
- To determine the habitat of an organism
- To study the behaviour of an organism
How many main ranks are there in the classification system?
How many main ranks are there in the classification system?
- 9 (correct)
- 7
- 5
- 11
What is the definition of a Species?
What is the definition of a Species?
What is the purpose of scientific names in biology?
What is the purpose of scientific names in biology?
What type of adaptation is the neck frills on a Frill Neck Lizard?
What type of adaptation is the neck frills on a Frill Neck Lizard?
What is the correct classification rank for a group of organisms that share a common ancestor?
What is the correct classification rank for a group of organisms that share a common ancestor?
What is the term for the process of grouping organisms based on their characteristics and genes?
What is the term for the process of grouping organisms based on their characteristics and genes?
What is the primary cause of variation within a species?
What is the primary cause of variation within a species?
What is the term used to describe the diversity of species within a particular region?
What is the term used to describe the diversity of species within a particular region?
What is the process by which organisms that are better suited to their environment are more likely to survive and reproduce?
What is the process by which organisms that are better suited to their environment are more likely to survive and reproduce?
What is the term used to describe the ability of an organism to survive and breed in its environment?
What is the term used to describe the ability of an organism to survive and breed in its environment?
What is the result of reduced biodiversity?
What is the result of reduced biodiversity?
What is the primary driving force behind the formation of new species?
What is the primary driving force behind the formation of new species?
What type of evolution occurs when species evolve similar adaptations due to living in similar environments?
What type of evolution occurs when species evolve similar adaptations due to living in similar environments?
What are the two types of biodiversity?
What are the two types of biodiversity?
What is the process by which a new species emerges from an existing one?
What is the process by which a new species emerges from an existing one?
What is the primary function of a phylogenetic tree?
What is the primary function of a phylogenetic tree?
What is the result of adaptive radiation?
What is the result of adaptive radiation?
What is the term used to describe the characteristics of an organism that are inherited from its parents?
What is the term used to describe the characteristics of an organism that are inherited from its parents?
What is the primary way that genetic variation is introduced into a population?
What is the primary way that genetic variation is introduced into a population?
What is the term for the process by which genetic information is shuffled during gamete formation?
What is the term for the process by which genetic information is shuffled during gamete formation?
What is the main difference between analogous and homologous structures?
What is the main difference between analogous and homologous structures?
What is the term for the change in genetic diversity of a population due to chance events?
What is the term for the change in genetic diversity of a population due to chance events?
What is the primary cause of resistance in bacteria and other organisms?
What is the primary cause of resistance in bacteria and other organisms?
What is the term for the movement of individuals with certain traits into or out of a population?
What is the term for the movement of individuals with certain traits into or out of a population?
What is the final stage of speciation?
What is the final stage of speciation?
What is the term for the process by which individuals with certain traits are more likely to survive and reproduce?
What is the term for the process by which individuals with certain traits are more likely to survive and reproduce?
What type of evolution occurs when related species evolve similar features despite physical separation?
What type of evolution occurs when related species evolve similar features despite physical separation?
What is an example of a biotic selective pressure?
What is an example of a biotic selective pressure?
What is an example of an abiotic selective pressure?
What is an example of an abiotic selective pressure?
How long does it typically take for natural selection to result in observable changes in a population?
How long does it typically take for natural selection to result in observable changes in a population?
What is a consequence of antibiotic resistance?
What is a consequence of antibiotic resistance?
What is a problem caused by the extinction of a species?
What is a problem caused by the extinction of a species?
What is being done to prevent extinction?
What is being done to prevent extinction?
Is extinction permanent?
Is extinction permanent?
What is artificial selection?
What is artificial selection?
What is an example of artificial selection?
What is an example of artificial selection?
What can be a consequence of artificial selection?
What can be a consequence of artificial selection?
What is a goal of protecting existing areas?
What is a goal of protecting existing areas?
Study Notes
Evolution & Natural Selection
- Biodiversity refers to the variety of species, genetic diversity, and ecosystem diversity on Earth
- Species diversity: different species in an ecosystem
- Genetic diversity: variation within a species or population
- Variation occurs in species and populations due to genes and chromosomes inherited from parents, genetic mutations, and environmental factors
- Adaptations are traits that help an organism survive and breed in its environment
- Structural adaptations (e.g., fur)
- Functional adaptations (e.g., making venom)
- Behavioural adaptations (e.g., courtship displays)
Classification
- Classification is the process of grouping living things based on their shared characteristics and genetics
- Taxonomy is the system of classification
- There are 9 main ranks in taxonomy: Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
- Each species has a unique scientific name to avoid confusion
Species & Variation
- A species is a group of organisms that can interbreed to produce fertile offspring
- Variation within a species can occur through genetic mutations and meiosis
- Genetic drift and gene flow can affect genetic diversity within a population
- Selection determines which variations or traits will provide an individual with an increased chance of surviving over others
Natural Selection & Evolution
- Natural selection leads to evolution over many generations
- Speciation is the formation of a new species
- Types of evolution:
- Divergent evolution: species evolve differently in separate environments
- Adaptive radiation: ancestral organisms adapt to new environments
- Convergent evolution: organisms evolve similar adaptations in different environments
- Parallel evolution: related species evolve similar features in different locations
- Phylogenetic trees represent evolutionary relationships among organisms
Resistance & Extinction
- Resistance can occur when a random mutation creates resistance to a selective pressure (e.g., antibiotics)
- Extinction occurs when a species is unable to adapt to changes in its environment
- Problems with extinction include loss of genetic information, removal of a species from its food web, and loss of potential food crops
- Conservation efforts include national parks, botanical gardens, and zoos to protect and preserve species and their habitats
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Description
Learn about the levels of classification, species definition, variation, and natural selection leading to evolution. Understand the consequences of reduced biodiversity and how it affects populations.
