GB1 ch. 1 vocab

hypothesis

testable and objective statement

prediction

testable statement based on hypothesis

alternative hypothesis

what is expected if tentative explanation is supported

null hypothesis

what is expected if tentative explanation is unsupported

theory

comprehensive statement with abundant evidence and widely supported & accepted

experimental group

group where independent variable is applied

pattern

what is observed; what exists

process

the mechanism, why it exists

spontaneous generation

first cell hypothesis

arise spontaneously from nonliving material

all-cells-from-cells hypothesis

part of current cell theory

all cells come from preexisting cells

heritable trait

a trait passed down generation to generation

natural selection

characteristics of population can be modified from generation to generation if a.) individuals in population differ [heritable], and b.) some individuals survive & reproduce based on differences

chromosome theory of inheritance

where info for diverse organisms is stored & transmitted

central dogma

DNA codes for RNA codes for proteins

evolution

changes in characteristics of population over time

population

group of individual of same species live in same area @ same time

speciation

natural selection cause divergence, so from one species comes new species

fitness

ability to produce viable offspring

adaption

heritable trait that increases fitness