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Questions and Answers
Where does heritable variation in traits come from?
Where does heritable variation in traits come from?
What is a locus?
What is a locus?
What is an allele?
What is an allele?
What does it mean for an organism to be heterozygous?
What does it mean for an organism to be heterozygous?
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What is evolution?
What is evolution?
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Which term refers to the differential reproductive success based on traits?
Which term refers to the differential reproductive success based on traits?
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What is the term for the location where a gene can occur?
What is the term for the location where a gene can occur?
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What is the term for having two different alleles at a particular locus?
What is the term for having two different alleles at a particular locus?
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What is the term for having two copies of the same allele at a particular locus?
What is the term for having two copies of the same allele at a particular locus?
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What drives the heritable changes in species traits over time?
What drives the heritable changes in species traits over time?
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Study Notes
Heritable Variation
- Heritable variation in traits comes from mutations in DNA
- Mutations are changes in the sequence of DNA
- Mutations can arise spontaneously or be induced by environmental factors
Locus
- A locus is the specific location on a chromosome where a gene resides
Allele
- An allele is a variant form of a gene
- Different alleles can lead to different traits
- Alleles are located at the same locus on homologous chromosomes
Heterozygous
- An organism is heterozygous when it has two different alleles at a particular locus
- Heterozygotes carry one copy of each allele
Evolution
- Evolution is the change in heritable traits of a population over generations
- Evolution is driven by natural selection and other evolutionary forces
- Natural selection leads to differential reproductive success
Natural Selection
- Natural selection is the process by which individuals with advantageous traits are more likely to survive and reproduce
- These advantageous traits become more common in a population over time
Locus
- The location where a gene can occur is called a locus
Heterozygous
- Having two different alleles at a particular locus is called heterozygous
Homozygous
- Having two copies of the same allele at a particular locus is called homozygous
Evolutionary Forces
- The heritable changes in species traits over time are driven by evolutionary forces
- These forces include natural selection, genetic drift, gene flow, and mutation
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Description
Test your knowledge of evolutionary processes and natural selection with this quiz! Explore the concept of heritable variation in traits and understand how genetics play a role. Find out where genes occur and how they shape our basic traits. Only the curious minds will ace this quiz!
