Population genetics

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Positive assortative mating
Like mates attract
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Negative assortative mating
Opposites attract
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F
Probability that 2 alleles are identical by decent, inbreeding coefficient
3 of 32
Strength of genetic drift between generations
1/2N
4 of 32
Fitness
Average contribution to the next generation by indv. or geno.
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Overdominance
Heterozygous advantage, both maintained
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Polyphenism
2 or more pheno. from one geno.
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Meristic trait
Determined by multiple genetic and env. factors - whole number
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Phenotypic variance
VP = VG + VE + VGE
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Genetic variation components
VG = VA (additive) + VD (dominance) + VI (epistatic)
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Broad sense heritability
Proportion of phenotypic variation attributable to genetic differences between populations
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Narrow sense heritability
Proportion of pheno, variance that contributes to resemblance between offspring and parents
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H^2
Genetic variance/Phenotypic variance
13 of 32
h^2
Additive genetic variance/Phenotypic variance
14 of 32
Regression
Linear relationship between phenotypes of offspring as a function of pheno. of parents
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Genotype-environment interaction
Difference between genotype depends on the environment
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Linkage disequilibrium
Associations between alleles at different loci - overrepresent coupling/repulsion
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Recombination
Removed LD
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Pleiotropy
Single locus affects expression on multiple traits
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QTL
Quantitative trait locus, location in genome causes different values of trait
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GWAS
Genome-wide assosciation study, identification of causal loci
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Anagenesis
Evolution taking place in a single lineage with passage of time
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Cladogenesis
Splitting of one lineage into two
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Allopatric
Speciation by geographic isolation
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Peripatric
Spec. when pop. is peripheral to a main pop.
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Parapatric
Spec. when no isolation
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Sympatric
Spec. when pop. overlap
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Genetic marker
Feature in a genome that allows to identify diff. alleles
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SSLP
Simple sequence length polymorphism
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Allozyme
Variant form of enzymes coded by different alleles at the same locus
30 of 32
VNTR
Variable no. of tandem repeats
31 of 32
Haplotype
Small chromosomal 'block' inherited as a unit
32 of 32

Other cards in this set

Card 2

Front

Negative assortative mating

Back

Opposites attract

Card 3

Front

F

Back

Preview of the front of card 3

Card 4

Front

Strength of genetic drift between generations

Back

Preview of the front of card 4

Card 5

Front

Fitness

Back

Preview of the front of card 5
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