Lecture 5: Development of Behavior Flashcards
What is interactive theory of development?
behavior (phenotype) results from the interaction between genotype and environment.
what is microarray tech?
methods of detecting messenger RNA production in thousands of genes
What occupations do worker bees progressively go through?
cleaning cells, feeding larvae, feeding nestmates, packing pollen, foraging.
What happens when young bees feeding nestmates are treated with juvenile hormone supplements?
They switch from feeding to foraging.
What happens when the corpora allata is removed from the young bees?
They fail to switch to foraging.
What happens when bees lacking corpora allata are treated with juvenile hormone supplements?
They regain ability to switch to foraging.
True or False? When foragers transfer food to younger bees, ethyl oleate is transferred.
True
True or False? The amount of Ethyl oleate transferred from older to younger bees apparently switches on or off the genes that regulate production of juvenile hormone.
True
What happens when small amounts of testosterone injected into newborn female rats?
Sexual organs already developed to unreceptive testosterone; brain receptors still receptive when adult females exhibit male copulatory behavior.
What happens when adult male rats behavior (testes removed as newborn) ?
Develop feminized brains, exhibit female copulatory behavior.
What happens when sexually immature female rats are exposed to newborn rats from other females?
After a week of sensitization, many females begin caring for new born rats, sounds and tactile cues from neonatal rats.
What happens when ovaries are removed from immature female rats which are then exposed to newborn rats from other females?
spayed rats are 1/3 as likely to care for newborn rats
What happens when spayed immature female rats are injected with estrogen and exposed to newborn rats from other females?
Most care for newborn rats.
What happens when testosterone is implanted in adult female?
Does not induce it to sing.
What happens to the songs of male cowbirds raised in isolation?
Similar to those of males raised under natural conditions.
