THSyllabus for ANTH 101-AMy Account-GnuText Behavior.pd ownloads/Study%20Guide%2
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THSyllabus for ANTH 101-AMy Account-GnuText Behavior.pd ownloads/Study%20Guide%20-%20Module%204.pdf Welcome To Rio H... Men's Basebal.CANVAS [ Pearson Login 1. Several female monkeys 5. Orangatan male looking interested in finding a few for a good time. Oaly in good males to mate with. town for a while, so expect a ??? ??. ||Parental care not required. |one-night stand. AM?? 2. Group of sexy bonobo|6. Huge male silverback swingers looking for matings! gorilla looking for a few of all types. Age is not an good females. High levels of A A issue. Same sex matings ok. sex mot required 3. Noed protection from 7. Old World monkey male infanticidal males? Look nowith large testicles interested further. I am a young, robust in meeting females Iover male monkey waiting to take sexual swelligs. wotbumarin 8. Swinging gibbon fem brothers looking for a mate. look ing to settle down and Will be willing to carry raise a family. Willing to offspring. Love twins. protect a terntory Sexual Selection Exercises Listed below are descriptions of various traits for several different species. Answer each of the questioes given below 1. Phalaropes are shorebirds found in North America. At their becoding grounds, males and females pair off, but once the eggs are laid, parental care is done solely by the males. (a) Is this a typical species or a sexually-reversed species? How do you know? (b) Which sex is more likely to engage in aggressive encounters? Which sex is more likely to be the choosier sex? 2. In a spocies of guppies, females prefer males with more orange color. (a) How can you determine if this is a typical or scxually-reversed species? (b) What are the typical male and female traits (such as nvestment in offspring and others]? (c) Is coloration the result of inter- or intra-sexual selection 3. Male sticklebacks (fish) choose heavier females as mates (a) How can you determine if this is a typical or sexually-reversed species? (b) What are the typical male and female traits [such as investment in offspring and others]? (c) Is female body size the result of inter or intra-sexual selectioe?Explanation / Answer
The Phalarops are interesting species in which males show parental care.This is the case of reversed sexual selection. usually famels are the one to give maximum parental care. The females are more likely to look out and compete for males and hence they are more aggressive. The males have to chose from the competing females and hence males are more choosier sex.
Females select and prefer males with orange color, this is typical sexual species where females are choosing the mate. The typical male characters are aggression and competition to attract female. The typical female characters are parental care and sexual selection of prefered males. Females invest more on offsprings and give parental care. The selection of orange color is the result of selection of males by females, so it is a intersexual selection.
Male sticklebacks choose the prefered females, this is an reversed selection. The typical male characters include aggression and less investment of parental care. Males tend to be more aggressive and show case their features in front of females. The females on the other hand chose the right male, invest on parental care and has fewer partners than the males. The selection of female body size by males is the result of intra sexual selection because heivier females oversize the other smaller females during competition.
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