Set of all the fossils ever discovered on Earth.

Chart that divides Earth's history into different time limits.

Preserved evidence of the activity of an organism.

Characteristic of a species that enables the species to survive in its environment.

Adaptation that enables species to blend in with their environments.

Resemblance of one species to another species.

The breeding of organisms for desired characteristics.

Slight difference in the appearance of individual members of a species.

Genetic factor that blocks another genetic factor.

True or False: Study of how traits are passed from parents to offspring is called genetics.

Genetic factor that is blocked by the presence of a dominant factor.

Section on a chromosome that has genetic information for one trait.

Two alleles that control the phenotype of a trait (what the genes code for)

Having two different alleles of a gene (ie: Hh)

Having the same two alleles of a gene (ie: HH or hh)

How a trait appears or is expressed.

True or False: Organisms genetic material is called genetics.

Change in the nucleotide sequence of a gene.

Describes a cell that has pairs of chromosomes.

Process in which one diploid cell divides to make haploid sex cells.

Describes a cell that has only one chromosome from each pair.

Study of the development of embryos from fertilization to birth.

Similar cells that work together and perform a function.

Process by which populations of organisms with variations that help them survive in their environments live longer, compete better, and reproduce more than those that do not have the variations.

When a cells cytoplasm divides.

Multicellular organisms have this type of cell.

The period of growth and development of a cell.

Group of different tissues working together to do a job.

A group of different orgns working together to do a series of jobs.

Process that creates two daughter cells.

Phase where the chromosomes line up in the middle of the cell.

Phase where chromosomes are at the complete opposite ends, and new nuclei are forming on each side to make 2 new cells.

Phase where chromosomes are visible, nucleus is still there.

Phase where the chromosomes move away, and the sister chromatids separate.

This holds together the DNA strands in a chromosome.

Possible explanation about an observation that can be tested by scientific investigations.

Logical explanation of an observation that is drawn from peior knowledge or experience.

Using one or more of your senses to gather information and take note of what occurs.

Statement about what will happen next in a sequence of events.

Factor that is measured or observed during an experiment.

Factor being tested in an experiment that is changed by the investigator to observe how it affects a dependent variable.

Describes a pattern or an event in nature that is always true.

Explanation of observations or events based on knowledge gained from many observations and investigations.

Comparing what you already know with the information you are given to decide whether you agree with it.

Interpretation of observations.

Change over time in populations of related organisms.

Fossil copy of an organism in a rock

Impression of an organism in a rock

Process by which populations of organisms with variations that help them survive in their environments live longer, compete better, and reproduce more than those that do not have the variations.

Nonliving part of an ecosystem.

Mix of gases surrounding a planet

Living or once-living thing in an ecosystem

All the living and nonliving things in one place

All the members of one species living in an area

Physical place where a population or organism lives

Limits the growth of a population

Two different species live together in a close relationship over a long period of time

Cannot make their own food and get energy by eating other organisms

Model showing several connected food chains