Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Ecology Quiz 3
Darwin and Evolution
| Question | Answer |
|---|---|
| What was Darwin's last inference about evolution? What is this inference known as? | Individuals do not evolve, populations evolve--known as microevolution |
| What is Modern Evolutionary Synthesis: | Integration of evidence and concepts from many filds to support our understanding of evolution |
| What became the new definition of evolution? | Change in allele frequencies over time |
| Gene: | Codes for protein, made of DNA |
| Population: | A group of individuals of same species, living in same area, and mate w/in the same population |
| Gene Pool: | All genes in a population |
| Allele: | Gene, 2 alleles per gene |
| Dominant Allele: | Covers up recessive allele |
| Carrier: | Heterozygote |
| Genotype: | Type of gene, types of alleles |
| Phenotype: | observable characteristics |
| What are the symbols for ALLELE frequencies? | P=dominant allele q=recessive allele p+q=1 |
| What are the symbols for GENOTYPE frequencies? | P squared=homo dominant, q squared, homo recessive 2pq = heterozygote p2+2pq+q2 = 1 |
| What causes cystic fibrosis? | Recessive allele |
| What is the hardy-weinberg model? | Description of what a population looks like if evolution is not happening |
| What is assumed about allele frequencies in the HWmodel? | They don't change from generation to generation cause the population is in equillibrium |
| How many assumptions are there for the HW model? | 5 |
| What are teh assumptions? | No natural selection, net mutation=0, no gene flow through migration, no genetic drift, mating is random |
| What does genetic drift mean? | no random changes in allele frequencies |
| When is genetic drift more likely to occur? | In small populations |
| What are some of the ways to get a smaller population? | Bottleneck and founder effect |
| Bottle-necking event: | A decrease in population size, with random survivors |
| What is the founder effect? | When a small population relocates to a new area. The allele frequencies of new population may be different from original population |
| What are the two conditions that cause the genetic change? | More likely in small populations, occurs at random |
| What hardy weinberg abbreviation is used to represent the frequency of individuals that are homozygous for the recessive allele? | q2 |
Created by:
talkglitter2486