BIOL 2300 Midterm 1 Latest Update Graded A+

BIOL 2300 Midterm 1 Latest Update Graded A+ Ecology study of interactions between organisms and their environment Environment all factors outside the organism; biotic and abiotic Proximal Patterns can be explained by present environment (weather influencing plant growth) Ultimate Patterns can be explained by past environment (ecological experiences of ancestors through evolution) Scientific Process 1. Observation/Discovery 2. Question 3. Hypothesis 4. Test (observe, experiment, or mathematical modeling) 5. Conclusion Null hypothesis no change or relationship Alternate hypothesis Prediction of change or relationship Population -a group of individuals of one species living together -where evolutionary change occurs/is revealed Homozygote has the same alleles at a particular locus on the pair of chomosomes Heterozygote has different alleles at a particular locus Alleles two or more alternative forms of a gene Genotype all genetic characteristics of an individual Phenotype -interaction of the genotype of an individual with its environment -how the genetic instructions are expressed Phenotypic Plasticity ability of individual to change its phenotype in response to changes in environmental conditions PP discrete forms When phenotype can be expresses as one of two (or more) options, depending on the environment. (ex. bees) PP continuous forms When phenotype has a range of how it can be expressed depending on the environment (ex. size of fish depending on food available) Evolution change in the genetic composition