11 Genetic Drift_Student

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Genetic Drift
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A change in allele frequency in a population that is due to chance.
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Bottleneck Effect
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A sudden change in allele frequency resulting from a dramatic reduction in population size.

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25 Terms

1
Genetic Drift
A change in allele frequency in a population that is due to chance.
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2
Bottleneck Effect
A sudden change in allele frequency resulting from a dramatic reduction in population size.
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3
Founder Effect
A change in allele frequency when a new population is established from a small number of individuals.
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4
Allele
Different forms of a gene that can exist at a single locus.
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5
Mendelian Lottery
The random assortment of alleles to gametes during meiosis.
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6
Allele Frequency
The proportion of a particular allele among all allele copies in a population.
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7
Sampling Error
The difference between the value obtained from a sample and the actual value from a population.
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8
Survivability
The ability of an individual or group to survive and reproduce in their environment.
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9
Environmental Change
Any significant alteration in the conditions of the environment, either natural or due to human influence.
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10
Genetic Variation
The diversity in gene frequencies within a population.
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11
Natural Selection
The process where organisms better adapted to their environment tend to survive and produce more offspring.
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12
Generational Change
The change that occurs in a population over successive generations.
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13
Ecology
The branch of biology concerned with the relationships between living organisms and their environment.
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14
Allele Fixation
The process by which a particular allele becomes the only allele present at a genetic locus in a population.
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15
Allele Loss
The reduction or complete disappearance of a particular allele in a population.
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16
Genetic Bottleneck
A significant reduction in population size that results in a loss of genetic diversity.
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17
Reproductive Success
The passing of genes to the next generation in a way that they too can pass on those genes.
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18
Gene Flow
The transfer of alleles or genes from one population to another.
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19
Mutation
A change in the DNA sequence that may lead to new traits.
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20
Homozygous
Having identical alleles of a particular gene.
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21
Heterozygous
Having different alleles of a particular gene.
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22
Selection Pressure
An environmental factor that influences which individuals survive and reproduce.
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23
Ecosystem
A biological community of interacting organisms and their physical environment.
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24
Phenotypic Variation
Differences in physical traits among individuals in a population.
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25
Amish Communities
Communities known for a limited gene pool that can lead to the founder effect, resulting in higher prevalence of certain genetic disorders.
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