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
BILD3
Lecture 5
| Term | Definition |
|---|---|
| Directional Selection | one extreme phenotype is most fit (decreases variation and changes population mean |
| Stabilizing Selection | intermediate phenotypes most fit (decreases variation and no change in population mean) |
| Destabilizing Selection | two extreme phenotypes are more fit than intermediate phenotypes (no change in population mean and increases variation) |
| Frequency-dependent Selection | Fitness of phenotype depends on phenotype frequencies in the population; (a) Negative frequency dependence: fitness decreases with frequency and (b) Positive frequency dependence: fitness increases with frequency |
| Probability | How likely is it that something will happen? The formal study of the laws of chance |
| Gene | the functional unit of heredity |
| Allele | alternative forms of a gene (A1 or A2, A or a, p or q) * there are two inherited alleles for each gene of a diploid organism – one maternal and one paternal |
| Locus/loci | location of a gene on a chromosome |
| Homozygous | refers to having identical alleles for a single trait |
| Heterozygous | they are different from one another |
| Equilibrium | The condition in which all acting influences are balanced or canceled by equal opposing forces, resulting in a stable system |
Created by:
stacymdez