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Questions and Answers
What are different versions of the same gene called?
What are different versions of the same gene called?
- Mutations
- Alleles (correct)
- Phenotypes
- Genotypes
An individual with two identical copies of a gene is heterozygous.
An individual with two identical copies of a gene is heterozygous.
False (B)
What term describes the struggle for resources between organisms?
What term describes the struggle for resources between organisms?
Competition
How is the evolutionary fitness of an organism measured?
How is the evolutionary fitness of an organism measured?
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What is adaptation?
What is adaptation?
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What does allele frequency refer to?
What does allele frequency refer to?
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Define gene pool.
Define gene pool.
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What is genetic drift?
What is genetic drift?
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What does predation refer to?
What does predation refer to?
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Study Notes
Genetics and Evolutionary Biology
- Alleles: Variations of a gene arising from nucleotide sequence changes, often due to mutations.
- Homozygous vs. Heterozygous: An individual with two identical alleles for a gene is homozygous; one with two different alleles is heterozygous.
Natural Selection and Coevolution
- Competition: Intense rivalry occurs among members of the same species for limited resources.
- Natural Selection: Predators and prey influence each other's evolution, leading to coevolution and resulting in adaptations that enhance survival and reproduction.
Fitness and Adaptation
- Evolutionary Fitness: Measured by reproductive success, which can fluctuate with environmental changes.
- Adaptation: A beneficial trait developed to aid survival and reproduction.
Genetic Concepts
- Allele Frequency: Indicates how often a specific allele occurs within a gene pool.
- Gene Pool: Represents the total collection of all alleles for every gene in a population.
- Genetic Drift: A random change in allele frequency in a population that occurs by chance.
- Predation: The act of one organism consuming another for sustenance.
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Description
Test your knowledge with these flashcards focused on Chapter 15 of Biology. Learn key terms like alleles, homozygous, and heterozygous along with their definitions. Perfect for students looking to reinforce their understanding of genetics.
