unit 1
what is an observation?
An act or instance of noticing or perceiving
What is cell division?
the division of a cell into two daughter cells with the same genetic material
What is DNA?
a self-replicating material that is present in nearly all living organisms as the main constituent of chromosomes
What is the fossil record?
history of life as documented by fossils
What is a learned behavior?
Learned behavior is the things that you are taught
What is a theory?
Something that is thought to be true, but is not yet 100% proven
What are cells?
cells are the building blocks of life
What does DNA stand for?
deoxyribonucleic acid
What is natural selection?
the process whereby organisms better adapted to their environment tend to survive and produce more offspring
What is an innate behavior?
Something that you are born with
What is photosynthesis?
a chemical reaction that takes place inside a plant, producing food for the plant to survive
What do cells do?
Cells provide structure for the body, take in nutrients from food and carry out important functions
What is a Punnett square?
a square diagram that is composed of a grid of usually four boxes and is used to calculate and depict all the combinations and frequencies of the different genotypes and phenotypes among the offspring of a cross in accordance with Mendelian inheritance.
What is a mutation?
the changing of the structure of a gene, resulting in a variant form that may be transmitted to subsequent generations
What is homeostasis?
the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes