biology
define Natural selection
The process by which an organism with advantages traits are more likely to survive and reproduce
Define Bottelneck effect
A drastic reduction in population size leading to a low genetic diversity
Define Allele frequency
How common an Allele is in a population
Define Flounder effect
When a small population moves to a new area and establishes a new population within a different gene pool
Define Meiosis
A cell devision that produces gametes (sex cells) with half the number of chromosomes
Genetic vairation
Differences in genetic information or alleles in a population
Define complete dominance
when one allele over powers the effect of another allele in the phenotype
Define incomplete dominance
when the hetrozygous genotype results in an intermediate phenotype
Define a Lethal allele
An Allele that causes death of the organism that carrries it
define Gene Pool
The combination of all genes present in a reproducung population
Define genetic drift
The change in frequency of an exsisting gene vairant in the population due to random chance
define crossing over
A cellular process that happens during meiosis when chromosomes of the same type are linked up
Define independent assortment
When the alleles or genes that sort into the newly formed gametes independently of one another
define homologous chromosomes
Chromosome pairs (one from each parent) that are similar in length, gene position , and location
Define-multiple allele
Two or more alleles occupying the same locus
Define- Segregation
The separation of allele pairs (different traits of the same gene) during meiosis so that they can transfer specifically to separate gametes.
Define-Migration
A pattern of behavior in which animals travel from one habitat to another in search of food, better conditions, or reproductive needs.