Practice Midterm Solutions
... 6. Male and female yellow mice are crossed. Over several litters, a 2:1 ratio of yellow to wild-type (agouti) pups were produced. If the symbol “Y” represents the allele associated with yellow body color, which symbols below most accurately describe the genotypes of the offspring? a) Yy and yy b) Y ...
... 6. Male and female yellow mice are crossed. Over several litters, a 2:1 ratio of yellow to wild-type (agouti) pups were produced. If the symbol “Y” represents the allele associated with yellow body color, which symbols below most accurately describe the genotypes of the offspring? a) Yy and yy b) Y ...
Sexual Selection and Courtship Behavior in Insects
... • As males evolve traits that manipulate females into mating with them… …females evolve traits to resist the male manipulation! • Then males evolve new traits that manipulate females, which is countered again by the females, etc. ...
... • As males evolve traits that manipulate females into mating with them… …females evolve traits to resist the male manipulation! • Then males evolve new traits that manipulate females, which is countered again by the females, etc. ...
Reeves`s Muntjac
... Reeves’s muntjacs are mostly crepuscular, active during dawn and dusk, but some individuals also display diurnal and nocturnal tendencies. In the wild, males keep small, well-defended territories that overlap with surrounding female territories. Males mark their territories with scent glands located ...
... Reeves’s muntjacs are mostly crepuscular, active during dawn and dusk, but some individuals also display diurnal and nocturnal tendencies. In the wild, males keep small, well-defended territories that overlap with surrounding female territories. Males mark their territories with scent glands located ...
11 Big Fish, Little Fish
... their transport, why be large? Why not find a female fast when still quite small and young and then hang on as a simple source of sperm? Why work and feed, and grow large and complex? Why not exploit the feeding female? All her offspring will still be 50 percent you. Indeed, this strategy is quite c ...
... their transport, why be large? Why not find a female fast when still quite small and young and then hang on as a simple source of sperm? Why work and feed, and grow large and complex? Why not exploit the feeding female? All her offspring will still be 50 percent you. Indeed, this strategy is quite c ...
Chapter 11
... visits then male pollen from yellow-flowered plants should have gotten ¾ of reproductive success, since they received ¾ of the visits. ¾ of the seeds did produce yellow flowered plants. So male success was directly related to the access to pollinators and where they delivered the pollen. but seed pa ...
... visits then male pollen from yellow-flowered plants should have gotten ¾ of reproductive success, since they received ¾ of the visits. ¾ of the seeds did produce yellow flowered plants. So male success was directly related to the access to pollinators and where they delivered the pollen. but seed pa ...
lecture 09 - sexual selection - Cal State LA
... - also advertize her reproductive value, as predicted by theory of “honest signaling” - females with larger swellings attained reproductive maturity at at younger age, had more offspring, and more surviving kids Result: males expend more effort fighting over, and spend more time grooming, females wi ...
... - also advertize her reproductive value, as predicted by theory of “honest signaling” - females with larger swellings attained reproductive maturity at at younger age, had more offspring, and more surviving kids Result: males expend more effort fighting over, and spend more time grooming, females wi ...
Jan-31-PPT - UBC Psychology`s Research Labs
... reported among females than males? • What are some criticisms of Baumeister’s theory? ...
... reported among females than males? • What are some criticisms of Baumeister’s theory? ...
Lecture43-PPT - UBC Psychology`s Research Labs
... • The finding that females outperform males in school has led a number of writers to argue that there is a “boy crisis” in the school system: Lewin (1998): How boys lost out to girl power. Kindlon & Thompson (1999): Raising cain: Protecting the emotional life of boys. Sommers (2000): The war agains ...
... • The finding that females outperform males in school has led a number of writers to argue that there is a “boy crisis” in the school system: Lewin (1998): How boys lost out to girl power. Kindlon & Thompson (1999): Raising cain: Protecting the emotional life of boys. Sommers (2000): The war agains ...
Howler Monkey
... Guenons: (Blue Monkey) Small (12-20lbs), arboreal, omnivores, live in troops of about 20 with one dominant male. Larger sexual dimorphism due to competition among mating males, Non-dominant males live solitary and will mate with wandering females of a troop. Large vaiation in facial patterns Baboons ...
... Guenons: (Blue Monkey) Small (12-20lbs), arboreal, omnivores, live in troops of about 20 with one dominant male. Larger sexual dimorphism due to competition among mating males, Non-dominant males live solitary and will mate with wandering females of a troop. Large vaiation in facial patterns Baboons ...
`Wingman` -- how buddies help alpha males get the girl
... alphas more often than other males, but not necessarily at the same territory where they were betas. Even when the local alpha slot was empty, some betas moved to be helpers elsewhere rather than take over the vacant position. "Without being an alpha, there's essentially no chance for these males to ...
... alphas more often than other males, but not necessarily at the same territory where they were betas. Even when the local alpha slot was empty, some betas moved to be helpers elsewhere rather than take over the vacant position. "Without being an alpha, there's essentially no chance for these males to ...
Recent research reveals
... different sexual strategies from the sex that invests less. It is clear that females, most of the time (through anisogamy) invest more. As a result, the following can be deduced: female RS is limited by either male quality (good genes) or male parental investment females will be highly selective bec ...
... different sexual strategies from the sex that invests less. It is clear that females, most of the time (through anisogamy) invest more. As a result, the following can be deduced: female RS is limited by either male quality (good genes) or male parental investment females will be highly selective bec ...
evolutionary theory of gender roles
... differences came from differences in parental investment. This is investment by the parent that increases the offspring’s chance of survival at the cost of the parent’s ability to invest in other offspring. The qualities and behaviours that led to reproductive success were different for males and fe ...
... differences came from differences in parental investment. This is investment by the parent that increases the offspring’s chance of survival at the cost of the parent’s ability to invest in other offspring. The qualities and behaviours that led to reproductive success were different for males and fe ...
Mating Systems
... age and underlying endocrine condition in the human male Mesomorphy may be an indicator of superior cardiac function and metabolic health • May be favored because they offered females greater protection and had physical advantages in hunting ...
... age and underlying endocrine condition in the human male Mesomorphy may be an indicator of superior cardiac function and metabolic health • May be favored because they offered females greater protection and had physical advantages in hunting ...
Sexual Selection
... (2) Variation is influenced age, which often serves as a correlate for experience or body size/size of fighting appendages (3) That the strength of sexual selection – inferred from the degree of variance in reproductive success – is most intense among males ...
... (2) Variation is influenced age, which often serves as a correlate for experience or body size/size of fighting appendages (3) That the strength of sexual selection – inferred from the degree of variance in reproductive success – is most intense among males ...
10sexselect1student - Fort Hays State University
... - cannot separate phenomena - POWERFUL - can overwhelm : ...
... - cannot separate phenomena - POWERFUL - can overwhelm : ...
Anisogamy
... If one male has more offspring, other males have less, because this is a is a zero-sum game within the male sex; males don’t have more offspring on average if all eggs would have been fertilized anyway, just greater variance. ...
... If one male has more offspring, other males have less, because this is a is a zero-sum game within the male sex; males don’t have more offspring on average if all eggs would have been fertilized anyway, just greater variance. ...
Eisenia veneta - St. Olaf Pages
... Eggs remain in soil over winter and begin to hatch in spring ...
... Eggs remain in soil over winter and begin to hatch in spring ...
a WORD version of the handout
... One feature of many species that is not easily explained by natural selection is sexual dimorphism. = females & males differ phenotypically. Examples: 1. Male cardinals are bright red, while females are drab. 2. Male peacocks have massive tails and are brightly colored compared to females. Why do th ...
... One feature of many species that is not easily explained by natural selection is sexual dimorphism. = females & males differ phenotypically. Examples: 1. Male cardinals are bright red, while females are drab. 2. Male peacocks have massive tails and are brightly colored compared to females. Why do th ...
Intra-sexual selection
... 2. Big dominant male can coerce females to mate. Yet it might also be in the interest of females to do so, because of: genetic quality(?), protection, better resources ...
... 2. Big dominant male can coerce females to mate. Yet it might also be in the interest of females to do so, because of: genetic quality(?), protection, better resources ...
2013_Cryan_Sexual_Selection copy
... other males for mating opportunities Intersexual Selection (Female Choice): If female reproductive success is not limited by access to males, then females will be selective about which males they mate with in order to maximize the quality of the male’s reproductive investment ...
... other males for mating opportunities Intersexual Selection (Female Choice): If female reproductive success is not limited by access to males, then females will be selective about which males they mate with in order to maximize the quality of the male’s reproductive investment ...
Gerontology - Michael Hoerger
... Average age someone in your position is expected to live; varies widely Female in Japan = 85 years Female Sierra Leone = 36 years At birth, the average American male can expect to live to age 74.5; female ...
... Average age someone in your position is expected to live; varies widely Female in Japan = 85 years Female Sierra Leone = 36 years At birth, the average American male can expect to live to age 74.5; female ...
Evolution II
... If none of this works - cheat • Satellite strategies – younger or “weaker” males often position themselves strategically near an attractive male, then sneaking up on females when the large male is unattentive or otherwise engaged ...
... If none of this works - cheat • Satellite strategies – younger or “weaker” males often position themselves strategically near an attractive male, then sneaking up on females when the large male is unattentive or otherwise engaged ...
Sexual Selection II - University of Arizona | Ecology and Evolutionary
... Sperm are very small (“inexpensive”) Eggs are large and nutrient rich (“expensive”). Anisogamy = having gametes of very different size Small gamete is the male gamete (sperm) ...
... Sperm are very small (“inexpensive”) Eggs are large and nutrient rich (“expensive”). Anisogamy = having gametes of very different size Small gamete is the male gamete (sperm) ...