UT BIO 359K - Spring2014_Bio359K_MidTermExam1_Key (10 pages)

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Spring2014_Bio359K_MidTermExam1_Key



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Spring2014_Bio359K_MidTermExam1_Key

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Exam 1 Key


Pages:
10
School:
University of Texas at Austin
Course:
Bio 359k - Principles of Animal Behavior

Unformatted text preview:

Spring 2014 MIDTERM 1 Write Full Name on BACK Fill in the Blanks 2pts each unless otherwise noted 1 4pts Researchers in the 1980s implanted female zebra finch chicks with estrogen estradiol and noted a change in their brain physiology and behavior as adults Describe how the brains of these estrogen implanted females differed from control females 2pts they had higher numbers of neurons in the HVC or higher vocal center also permissible for 1 pt male like brains And speculate as to which behavior they were observed performing that the control females did not perform 2pts singing or courting other females 2 What is the physiological mechanism that allows salmon to geographically imprint onto their natal tributaries Their olfactory system olfactory epithelium produces more receptors that match the chemical signals in their natal stream allowing them to search for this scent later on in life their olfactory system is primed for this scent 3 3pts What hormone helps mediate social memory in male rodents oxytocin what two behaviors does it help regulate in female rodents maternal care partner bonding 4 3pts The above experimental results are from a selection experiment in which they raised Drosophila larvae in high and low density populations Name the gene responsible for the different responses 1pt for Based upon the results what selective forces appear to maintain two alleles for this gene in nature 2pts differences in population density also acceptable high density favors rovers low density favors sitters 5 4pts It is assumed that the ancestral mating system of voles involved polygyny males controlling groups of females Speculate on a BEHAVIORAL response by females that could destabilize polygyny 2pts and a subsequent Male Behavioral Response that could lead to monogamy 2pts Females could become promiscuous which leads to male uncertainty of paternity Males could then mate guard to ensure paternity 6 Hearing her partner and her own self coo produces what physiological



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