Natural Selection Flashcards
(37 cards)
Natural Selection
When adapted organisms survive and make more offspring
Adaptation
When an organism gets better suited for their environment
Microevolution
A change within a species
Macroevolution
Major change in organisms for a long amount of time
Overproduction of offspring
When more offspring are born that can possibly survive
Variation
A change in condition or amount
Fitness
Measure of an organisms ability to survive and reproduce
Survival of the fittest
Only a certain group will survive
Descent with modification
Change in gene frequency over time In a population
Genetic variability
Measure in genetic phenotype to vary from one another
Sexual reproduction
When two gametes fuse to produce an offspring
Asexual reproduction
When an offspring is produced by a single parent
Genetic homology
Shared ancestry through genes
Protein homology
Shared ancestry through proteins
Species
Groups of organisms that are so similar to one another
Gene pool
A population has all the same genes and alleles
Traits
How an organism appears
Environmental impact
A new change in a species that screw up an enviorment
Genetic variability
Different geno and phenotypes on a species
Genetic drift
Change in frequency in alleles over time
Gene flow
Movement of genes in or out of a population
Non random mating
Organisms chose who to mate with based on traits
Mutations
Changes in dna
Natural selection
Survival of the fittest
