DNA
What type of sugar does DNA have?
Deoxyribose
What type of sugar does RNA have?
Ribose
True or False:
All mutations are bad.
False
How many pairs of chromosomes do we have?
23
What is the evidence for common descent? name one
Comparative anatomy, fossil record, embryology and development and DNA comparison
An adaptation that enables a species to blend in
Camouflage
The shape of DNA.
Double Helix
What are the four bases of RNA?
Cytosine
Adenine
Guanine
Uracil
A permanent change to DNA
Mutation
Where is DNA found?
The nucleus
Evolution happens over time as a result of natural selection acting on these.
adaptations or traits
The process that selects beneficial traits and makes them more common
Natural selection
The four bases of DNA.
Adenine
Cytosine
Guanine
Thymine
What does mRNA do?
Carries genetic information in the cells from nucleus to ribosomes.
An example of an environmental factor that can cause mutations.
Type of mutation where a base pair is removed.
Deletion Mutation
True or false? Survival of the fittest means that only the biggest, fastest, and strongest organisms survive.
False
A trait that helps an organism survive in their environment
Adaptation
Makes up the backbone of DNA?
Where are proteins made?
The ribosomes.
True or False:
Most mutations occur randomly.
True
Most genes contain codes for making:
Proteins
Variations within a population that are _____________ will decrease the overall fitness of the population.
Harmful or beneficial?
Harmful
Different versions of a trait
variation
How does DNA replicate?
It splits down the middle between the two base pairs. Then the matching base pairs come and bond to the exposed bases and two identical strands of DNA are made.
Amino acids
Example of neutral mutation.
Mutation that changes eye color.
Part of DNA's code that is on a chromosome.
gene
Natural selection is a process where living things with traits that help them ___________ and ___________ are more likely to pass those traits to the next generation.
survive and reproduce
The change in frequency of traits in a population over time
Evolution