Earth's History
What is 4.5 Billion?
What is a diploid?
If a species is threatened, it is in danger of becoming _______________.
What is endangered?
A fertilized egg
What is a zygote?
A phase of mitosis when the chromosomes are pulled to opposite sides of the cell
What is anaphase?
The correct order for units of geological time from greatest to least.
What is eon, era, period, and epoch?
This type of reproduction results in offspring that are different from each other
What is sexual reproduction?
The main scientist who developed the theory of natural selection.
Who is Charles Darwin?
The preserved remains of a once living organism
What is a fossil?
Most scientists believe that this was the first organism on Earth
What is bacteria or archaebacteria?
a fossil forms over this amount of years
What is thousands?
Occurs at the end of telophase
What is cytokinesis?
_______________ is the driving force for evolution.
What is competition?
A trait that helps an organism survive and reproduce
What is an adaptation?
Multicellular emerged on Earth during this
What is the phanerozoic eon?
The period that the dinosaurs first appeared in
This type of cell division cuts the number of chromosomes in half
What is meiosis?
An organism from which all organisms on Earth descended from.
What is a common ancestor?
The process by which humans intentionally select plants or animals with desirable traits and breed them
What is artificial selection?
In a multicellular organisms, mitosis results in
What is cell growth and repair?
What are vestigial structures?
The sources of variation
What are mutations and recombination?
A fossil that that isn't the preserved remains of an organism, but the biologic activity of an organism.
The phases of mitosis in order (starting with interphase)
What is interphase, prophase, metaphase, anaphase, telophase?