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EEB 184 (3) Test With Complete Solution
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EEB 184 (3) Test With CompleteSolution
plasticity - Answer refers to the property by which the same genotype produces distinct
phenotypes depending on the environmental conditions under which development takes
place.
ecdysone - Answer the major steroid hormone in insects; coordinating developmental
transitions such as larval molting and metamorphosis
ecdysteroid - Answer levels of this hormone increase before eyespot development in
butterflies (temporal correlation)
enabling mutation - Answer allows organism to become plastic
(genetic alteration conferring environmental sensitivity to a phenotype that was
originally not plastic. This allows the expression of plasticity, which can thereafter be
shaped by selection)
genetic accommodation - Answer you have a plastic response and then you have
evolutionary change that affects what/how large that plastic response is
(the process by which selection shapes the properties and/or magnitude of a plastic
response)
genetic assimilation - Answer ex. butterfly spots change due to seasons but something
happens so that the descendants always have big eye spots
(refers to the process of genetic accommodation by which there is the fixation of what
were previously environmentally induced phenotypes)
JH - Answer corpora allata gland secretes...
ecdysone - Answer prothoracic gland secretes...
neck - Answer to block the corpora allata (JH), ligate the...
no color change - Answer When caterpillar ligature was placed behind the neck
corpora allata - Answer cue from ___________ required for color change in polyphenic
line (tabacco worm)
buying time hypothesis - Answer being plastic gives you time for mutations to arrive so
you can adapt to an environment
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