Evolution Population
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| Darwin didnt know how _______ worked. | Heredity
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| He didnt know how ________ worked. | Varation
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| The early 1900's brought Mendelian __________ & ___________ together in 1 logical framework. | Genetics and evolution.
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| Population- | A group of individuals of the same species that interbreed.
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| All the genes including all the diffrent alleles that are present in a population. | Gene pool.
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| The number of times an allele occurs in the gene pool compared with the total number of alleles for the gene. | Relative allele frequency.
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| Evolution occurs ________ level. | Population
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| The 2 main sources of genetic variation are: | 1. Mutations 2. Genetic shuffling
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| Any change in a dna sequence of dna. | Mutations
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| Many but not all mutations result in changes in an organisms ________ | fitness
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| Each ________ pair moves independently in ________. | Homologous and meiosis crossing.
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| The number of _______ produced for a given trait depends on how many genes __________ the trait. | Phenotypes & controled.
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| The simplest type of trait is a | single gene trait.
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| Single gene traits often only have _ alleles | 2
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| If teh trait has ________ there will be only 2 _______ phenotypes | Dominance & diffrent
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| Traits controlled by 2 or more traits. | Polygenic traits.
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| These are also called _________. | Quanitive traits.
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| They are very _______ to study. | complex
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| Populations are typically in a symmetrical bell shaped curve called a __________. | Normal distribution.
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| A group of individuals of the same species that interbreed. | Population
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| Most genes occur in diffrent forms which produce diffrent ___________. | Phenotypes.
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| Over time alleles that produce the most sucessful phenotypes will ________ in the population. | Increase
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| Less sucessful alleles will become ________ | less common.
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| Natural selction for various traits among individuals of a population affects _____________ in each generation. | which individuals survive and reproduce.
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| Process results in _________ to the enviroment. | Adaption.
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| Natural selction occurs on the __________ level | Individual
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| Each gene in gene pool may have _____________ | 2 or more alleles
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| Individuals _________ diffrent allele combinations | Inherit
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| What determines which alleles a new individual has? | Mutations
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| Change in chromosome ______________ | number or structore.
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| Allele frequencies for a gene are ___ changing | Not
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| The population is _________ | not evolving.
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| 5 conditions of genetic equilibrium | 1. No mutation 2.Random mating 3. Gene doesnt affect surviaval or reproduction 4. Large population size
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