unit 1
what is the difference of theory and law
theory: an explanation for observable phenomena
law: a description of a consistent pattern in natural phenomena, sometimes mathematical
What is a chromosome
a structure found in cells that contains DNA
how many chromosomes do humans have
Humans have 46 chromosomes
how old is earth
4.5 billion years old
what are behavioral adaptations
behaviors or activities performed by an organism that increase its fitness
observation: the way something seems or looks like
inference: a explanation of a observation
what is DNA
DNA is a molecule that carries genetic information in cells.
sections of DNA that control a trait
what is a species
a group of potentially interbreeding organisms that have the ability to produce fertile offspring
What are examples innate behavior
reflexes and fixed action patterns
What should a hypothesis include?
1. what is being tested
2. the predicted outcome
3. a possible explanation
what is photosynthesis
a process used by plants and other organisms to convert light energy into chemical energy
difference in traits and heredity
traits: a characteristic of an organism
heredity: the passing of traits from parent to offspring
what are fossils
mineral replacements, preserved remains, or traces of organisms that lived in the past
what are learned behaviors
an activity or behavior that is acquired by an organism through experience