Genetics and Natural Selection

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What is Natural Selection?

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Natural Selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.

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What does the theory of evolution by natural selection imply is changing over time?

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The inherited traits of a population.

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What is the definition of Phenotype?

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Phenotype refers to the observable physical characteristics of an organism, such as color, shape, and size.

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What is the genotype of a red-flowering plant in a species where red (R) is dominant over white (r)?

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The genotype can be either RR (homozygous dominant) or Rr (heterozygous).

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What is incomplete dominance?

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Incomplete dominance is a genetic situation in which one allele does not completely dominate another allele, resulting in a new phenotype.

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What is a Genotype?

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Genotype is the genetic constitution of an individual, representing the alleles inherited from the parents.

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What is the difference between Homozygous and Heterozygous?

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Homozygous refers to having two identical alleles for a trait, while heterozygous refers to having two different alleles for a trait.

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What is Codominance?

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Codominance is a genetic scenario where both alleles in a heterozygous individual contribute to the phenotype, resulting in both traits being expressed.

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What is Extinction?

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Extinction is the end of an organism or a group of organisms, typically due to environmental changes or loss of habitat.

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What is the role of mutations in evolution?

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Mutations are changes in DNA that can lead to new traits, providing raw material for natural selection to act upon.