Selection & Speciation Flashcards
These are causes of microevolution, which change allelic frequencies.
Environmental pressures
The source of all variation?
MUTATION
Non-hertiable mutations?
Somatic
Heritable mutations?
Gametic
Two types of mutations (Spidermans)
Spontaneous - replication errors
Induced - radioactive spider bite. Mutagenic agents.
The change of a base pair?
Point mutation
A change to DNA with no effects.
Silent mutation
A change to DNA that changes the amino acid?
Missense mutation
Premature stop, effects can be nothing to everything!
Nonsense mutation
Sickle cell anemia is a..
Missense mutation
T/F Reading frames can be restored through 3 deletions.
TRUE
T/F Deletions & Insertions can be spontaneous or induced.
TRUE
Deletions:
Change amino acid sequence
Insertions:
Adding extra, making stop sequence
A deletion could be restored by…
Insertion
A random event that changes allelic frequencies?
Genetic Drift (Change to population)