Individuals within a species are not identical. This is called...
- Speciation
- Variety
- Variation
- Evolution
Which of these factors causes variation?
- Genetic factors
- Environmental factors
- Genetic and environmental factors
The results of random errors in copying DNA are called...
- Reproductions
- Alleles
- Evolution
- Mutations
Our main evidence for evolution happening is...
- Historical records
- Fossils
- Classification
- All of the above
Evolution is...
- The slow change of a species over time
- Changes within an organism's lifetime
- The best-adapted organisms are more likely to survive and breed
Which type of reproduction gives rise to most variation?
- Sexual reproduction
- Asexual reproduction
Which substance carries the genetic code from one generation to the next?
- Chromosomes
- Genes
- DNA
The best-adapted organisms are more likely to survive and breed. This is...
- Evolution
- Natural selection
- Selective breeding
The theory that life may have started somewhere else and then come to Earth is called...
- Pandora
- Panavision
- Panspermia
How old is the Earth?
- About 13.7 billion years
- About 4.5 billion years
- About 65 million years
- About 150,000 years
What is a receptor neuron?
- Part of the endocrine system
- Part of the digestive system
- Part of the nervous system
- Part of the paranoid system.
Reflex actions are...
- Faster than conscious actions
- Slower than conscious actions
The brain and spinal cord are called the...
- Main nervous system
- Peripheral nervous system
- Central nervous system
An "effector" could be...
- A muscle
- A touch sensor in your skin
- A temperature sensor in your skin
Where do we think that Homo Sapiens evolved?
- Asia
- Central America
- Africa
- India
Which of these couldn't Darwin explain?
- How natural selection works
- How selective breeding works
- How features are passed on from one generation to the next.
The variety of organisms on Earth is called...
- Biocomplexity
- Ecology
- Biodiversity