Bio 112 Ch. 24: The Origin of Species Flashcards Preview

Biology 112 > Bio 112 Ch. 24: The Origin of Species > Flashcards

Flashcards in Bio 112 Ch. 24: The Origin of Species Deck (5):
1

What is a species? (4 major topics)

1. Morphology 2. Physiology 3. Biochemistry 4. DNA sequences -->all considered when grouping animals together

2

________ between populations holds the phenotype of a population together.

Gene Flow.

3

___________ is the existence of biological factors (barriers) that impede two species from producing viable, fertile offspring.

Reproductive Isolation.

4

Prezygotic Barriers (5):

1. Habitat Isolation2. Temporal Isolation 3. Behavioral Isolation 4. Mechanical Isolation 5. Gametic Isolation

5

Postzygotic Barriers (3):

1. Reduced Hybrid Viability 2. Reduced Hybrid Fertility 3. Hybrid Breakdown