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Evolution Population
| Question | Answer |
|---|---|
| Darwin didnt know how _______ worked. | Heredity |
| He didnt know how ________ worked. | Varation |
| The early 1900's brought Mendelian __________ & ___________ together in 1 logical framework. | Genetics and evolution. |
| Population- | A group of individuals of the same species that interbreed. |
| All the genes including all the diffrent alleles that are present in a population. | Gene pool. |
| The number of times an allele occurs in the gene pool compared with the total number of alleles for the gene. | Relative allele frequency. |
| Evolution occurs ________ level. | Population |
| The 2 main sources of genetic variation are: | 1. Mutations 2. Genetic shuffling |
| Any change in a dna sequence of dna. | Mutations |
| Many but not all mutations result in changes in an organisms ________ | fitness |
| Each ________ pair moves independently in ________. | Homologous and meiosis crossing. |
| The number of _______ produced for a given trait depends on how many genes __________ the trait. | Phenotypes & controled. |
| The simplest type of trait is a | single gene trait. |
| Single gene traits often only have _ alleles | 2 |
| If teh trait has ________ there will be only 2 _______ phenotypes | Dominance & diffrent |
| Traits controlled by 2 or more traits. | Polygenic traits. |
| These are also called _________. | Quanitive traits. |
| They are very _______ to study. | complex |
| Populations are typically in a symmetrical bell shaped curve called a __________. | Normal distribution. |
| A group of individuals of the same species that interbreed. | Population |
| Most genes occur in diffrent forms which produce diffrent ___________. | Phenotypes. |
| Over time alleles that produce the most sucessful phenotypes will ________ in the population. | Increase |
| Less sucessful alleles will become ________ | less common. |
| Natural selction for various traits among individuals of a population affects _____________ in each generation. | which individuals survive and reproduce. |
| Process results in _________ to the enviroment. | Adaption. |
| Natural selction occurs on the __________ level | Individual |
| Each gene in gene pool may have _____________ | 2 or more alleles |
| Individuals _________ diffrent allele combinations | Inherit |
| What determines which alleles a new individual has? | Mutations |
| Change in chromosome ______________ | number or structore. |
| Allele frequencies for a gene are ___ changing | Not |
| The population is _________ | not evolving. |
| 5 conditions of genetic equilibrium | 1. No mutation 2.Random mating 3. Gene doesnt affect surviaval or reproduction 4. Large population size |
Created by:
makgra30
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