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Evolution stuff

Evolution stuff biology exam 1 part 5

QuestionAnswer
What are the types of selection Sexual, directional, disruptive, stabilizing, neutral, heterozygote, balancing
Sexual selection traits that improve mating success
Directional selection Favors one extreme of a trait
Disruptive selection Favors both extremes of a trait over intermediates
Stabilizing selection Favors intermediate traits, reducing variation
Neutral selection Genetic variation with no effect on fitness
Heterozygote selection Higher fitness in heterozygous individuals
Balancing selection Maintains genetic diversity
Definition of diploidy Having two sets of chromosomes
Importance of diploidy Maintains genetic variation and provides a reservoir for natural selection
maintenance of mutations introduce new genetic variations
maintenance of gene flow movement of genes between populations
maintenance of sexual reproduction Creates unique combinations of genes
maintenance of diploidy preserves genetic variation hiding recessive alleles
maintenance of balancing selection Maintains multiple alleles in a population (e.g. heterozygote advantage, frequency-dependent selection)
maintenance of environmental variation different environments favor different traits, maintaining diversity
Created by: josie_d
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