Organism Examples Flashcards
What is an example of a vestigial structure?
Whale femur & Whale pelvis
What is an example of a homologous structure?
Radius & ulna in dogs, humans, whales, etc.
What is an example of a derived trait?
Silent, flat wings in Hawaiian Field Crickets
Chickadees - Neuroplasticity
Food storage is seasonal, thus storing occurs at high levels in fall and winter and low levels in spring and summer.
Memory for cache sites is hippocampus dependent in chickadees, therefore both the recruitment of new neurons into the hippocampus and the total size of the hippocampus change seasonally.
Endocrine Behavior Example - Sheep
The release of oxytocin is required for maternal behavior in sheep.
Endocrine Behavior Example - Rat
Mothers who groom pups more have daughters who do the same and have pups who are less fearful.
Cross-fostered pups acted like mom who raised them.
High licking and grooming mothers show higher levels of
oxytocin receptors in the brain; differences in oxytocin receptor levels may be functionally related to maternal behavior.
Black Wing Damsel Fly
Can remove the sperm from a female’s previous mate and replace it with his own.
Good Gene Hypothesis - Behavioral Examples
Bower Birds, Birds of Paradise, & Peacock Spider
The swordtail fish is an example of…
…sensory exploitation.
Primate Sensory Exploitation Example
Red fruit easily discernible against a dark green leafy backdrop.
California Mice
Male care is beneficial to provide offspring with extra body heat; this allows more offspring to survive.
Example of a monogamous bird
Lovebirds
Example of dual-mate enforced monogamy
Yellow Breasted Chat
Examples of Resource Defense Polgyny
White rhinos & Cichlid Fish
Examples of Female Defense Polygyny
Red deer & Elephant Seals
