What phenotypic effects does crowding have on the migratory locust? How are these changes
adaptive?
What will be an ideal response?
Migratory locusts can develop into either solitary or migratory forms. Crowding induces a
transformation to the migratory form with more body fat and longer wings. These changes are adaptive
because dispersal reduces competition in the original environment and may establish new populations
in unoccupied environments.
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The symptoms of excessive consumption of alcoholic beverages are due to dehydration. Does that make sense? You drink a lot, and then you are dehydrated? Actually, it is caused by a hormone that is produced in response to the consumption of alcohol. What is this hormone?
a. ANF b. ADH c. vasopressin d. ACTH e. renin
The human life cycle consists of
a. adults who are haploid and produce diploid gametes, these gametes fuse to produce a haploid zygote which grows into an adult. b. adults who are diploid and produce haploid gametes, these gametes fuse to produce a diploid zygote which grows into an adult. c. zygotes who are haploid fuse to produce a diploid gamete which grows into an adult. d. gametes that are diploid and produce haploid zygotes, these grow into haploid adults.
In the CRISPR/Cas system ________.
A. methylated DNA sequences are hydrolyzed, effectively destroying the viral DNA B. bacteria integrate portions of the viral genome into their own so they have a molecular snapshot of their attacker to prevent future encounters C. methylase enzymes add methyl groups to the viral nucleic acids, preventing transcription D. restriction endonucleases digest viral genomes once they enter the cell if the viral DNA is not methylated
The meristems that arise from the apical meristem include all of the following EXCEPT
A. ground meristem. B. procambrium. C. epidermis. D. protoderm.