A Mind Fit for Mating
... Main Thesis • Human mental abilities shaped by sexual selection • not natural selection • Not necessarily optimal or rational ...
... Main Thesis • Human mental abilities shaped by sexual selection • not natural selection • Not necessarily optimal or rational ...
NAME: IDENTITY CARD NUMBOR: SCHOOL/INSTITUTION: SET: 7
... there is a convergent evolution of alarm calls because their acoustic properties make the call difficult to locate. there is a convergent evolution of alarm calls because their acoustic properties allow the caller to locate precisely the predator flying over. there is a convergent evolution of alarm ...
... there is a convergent evolution of alarm calls because their acoustic properties make the call difficult to locate. there is a convergent evolution of alarm calls because their acoustic properties allow the caller to locate precisely the predator flying over. there is a convergent evolution of alarm ...
Sex Linkage Reciprocal Cross Exceptions
... Environmental Determination of Sex • A mechanism of sex determination that is not genetically determined at fertilization • Directed by environmental factors – related to association or lack of association with other members of species – temperature determination • turtle eggs incubated a ...
... Environmental Determination of Sex • A mechanism of sex determination that is not genetically determined at fertilization • Directed by environmental factors – related to association or lack of association with other members of species – temperature determination • turtle eggs incubated a ...
From nacici to maranteega: is female polygamy a
... this point is the great rampeegade on the mirrors :P3. The energy produced by the mitochondrios (the same for all females) is not enough to sopport the stress of more than one male at a time, even with some exceptions (Laidos, 1988). So, this easily explain why females are monogamous: un basta e van ...
... this point is the great rampeegade on the mirrors :P3. The energy produced by the mitochondrios (the same for all females) is not enough to sopport the stress of more than one male at a time, even with some exceptions (Laidos, 1988). So, this easily explain why females are monogamous: un basta e van ...
`Just-so` stories of sex and family life
... why this generosity to the male, and a reversal of the (supposedly) stereotypical male/female roles? Mark Elgar, University of Melbourne, explains: ‘A constant stream of suitors wanting to participate in a polygamous free-for-all could possibly lead to greater harassment, leading to the female expen ...
... why this generosity to the male, and a reversal of the (supposedly) stereotypical male/female roles? Mark Elgar, University of Melbourne, explains: ‘A constant stream of suitors wanting to participate in a polygamous free-for-all could possibly lead to greater harassment, leading to the female expen ...
Case05 Sex linked hemophilia
... 5. What is the probability that Marcy and Tom will have any child with hemophilia (either sex) There’s a 50% chance Marcy is a Carrier Of that 50% chance cross XHXh with XHY¼ XHXH normal female ¼ XHY- normal male ...
... 5. What is the probability that Marcy and Tom will have any child with hemophilia (either sex) There’s a 50% chance Marcy is a Carrier Of that 50% chance cross XHXh with XHY¼ XHXH normal female ¼ XHY- normal male ...
File - Mrs. LeCompte
... environment does not have enough resources to support lots of offspring at one time Monogamous = when one male mates with only one female form a pair bond o Both male and female help with rearing of the young o Rare in primates Sexual Selection Most often is female choice, leading to male comp ...
... environment does not have enough resources to support lots of offspring at one time Monogamous = when one male mates with only one female form a pair bond o Both male and female help with rearing of the young o Rare in primates Sexual Selection Most often is female choice, leading to male comp ...
Chapter 12 – Inheritance Patterns And Human Genetics
... if there is incomplete dominance? If there is codominance? ...
... if there is incomplete dominance? If there is codominance? ...
Supplementary Material Chapter 4 Word Document
... themselves by a sort of cloning process. This form of reproduction is known as parthenogenesis (‘virgin birth’), and although it is not found among mammals and birds, it is not uncommon in fish, lizards, frogs and plants. Males are a problem because, in the absence of male care (which is very common ...
... themselves by a sort of cloning process. This form of reproduction is known as parthenogenesis (‘virgin birth’), and although it is not found among mammals and birds, it is not uncommon in fish, lizards, frogs and plants. Males are a problem because, in the absence of male care (which is very common ...
Natural Selection
... the beginning of the 1800’s black moths became more favorable because their coloring blended in better with the black soot from coal being burned. ...
... the beginning of the 1800’s black moths became more favorable because their coloring blended in better with the black soot from coal being burned. ...
Eisenia veneta - St. Olaf Pages
... o males die, females lose wings and become new queens Queens lay eggs who will become her workers as adults Queens wait in chamber during this time, using fat reserves and wing muscle as energy source Total lifespan: 6-12 weeks. o Can be increased for up to 10 months if cold After about 2 years of c ...
... o males die, females lose wings and become new queens Queens lay eggs who will become her workers as adults Queens wait in chamber during this time, using fat reserves and wing muscle as energy source Total lifespan: 6-12 weeks. o Can be increased for up to 10 months if cold After about 2 years of c ...
Evo Notes 2b
... The lion’s mane… • Females are attracted to males with larger, dark manes • Correlation with higher testosterone levels ...
... The lion’s mane… • Females are attracted to males with larger, dark manes • Correlation with higher testosterone levels ...
CH12L2
... •Access to more females •Mix genes with a greater variety of females •Increased fecundity Females: •Access to dominant males (good genes) •If females are related they can share.. •territory defense responsibility •offspring defense responsibility Partner disadvantages: Males must typically defend: • ...
... •Access to more females •Mix genes with a greater variety of females •Increased fecundity Females: •Access to dominant males (good genes) •If females are related they can share.. •territory defense responsibility •offspring defense responsibility Partner disadvantages: Males must typically defend: • ...
Frog Reproduction
... Explain how male frogs attracts females of the same species. Discuss the reproductive system of a frog. Describe the changes that occur during metamorphosis. Identify two examples of parental care in frogs. ...
... Explain how male frogs attracts females of the same species. Discuss the reproductive system of a frog. Describe the changes that occur during metamorphosis. Identify two examples of parental care in frogs. ...
Effect of extra prenatal testosterone on rabbit offspring at birth
... Abstract. In several rodent species, the sexual differentiation of offspring is known to be affected prenatally, by the testosterone reaches the foetuses at a critical time. The aim of our present study was to investigate, whether this process exists also in domestic rabbit. For this, 2 different am ...
... Abstract. In several rodent species, the sexual differentiation of offspring is known to be affected prenatally, by the testosterone reaches the foetuses at a critical time. The aim of our present study was to investigate, whether this process exists also in domestic rabbit. For this, 2 different am ...
Monkey, red tailed guenon 2.15 - The Maryland Zoo in Baltimore
... • Store food in cheek pouches and move away from group to eat to avoid theft by other monkeys Social Structure • Red-tailed guenons live together in family groups ranging from about 7 to 35 individuals o One adult male and several females and juveniles • Groups feed together during the day and sleep ...
... • Store food in cheek pouches and move away from group to eat to avoid theft by other monkeys Social Structure • Red-tailed guenons live together in family groups ranging from about 7 to 35 individuals o One adult male and several females and juveniles • Groups feed together during the day and sleep ...
Male Mexican mollies grow mustaches to attract mates
... to female mollies and may represent a sexually Professor Schlupp suspects it may also be used selected trait. physically to excite the female or pass on tactile information by rubbing it against the genitals, since The Mexican molly fish (Poecilia sphenops) is a a male will often "nip" the genital a ...
... to female mollies and may represent a sexually Professor Schlupp suspects it may also be used selected trait. physically to excite the female or pass on tactile information by rubbing it against the genitals, since The Mexican molly fish (Poecilia sphenops) is a a male will often "nip" the genital a ...
XYZW as nature`s language of love?
... chromosome encodes ‘femaleness’ so is restricted to the female lineage. The non-SD chromosomes are coloured black or white, depending on whether they are present in females or males, respectively, in the first generation; as can be seen, they interchange between male and female lineages. The XY syst ...
... chromosome encodes ‘femaleness’ so is restricted to the female lineage. The non-SD chromosomes are coloured black or white, depending on whether they are present in females or males, respectively, in the first generation; as can be seen, they interchange between male and female lineages. The XY syst ...
Brooker Chapter 2
... • Affected males, when they survive to reproductive age, cannot transmit the phenotype to their offspring unless they mate with a carrier or affected female. Their daughters, however, will all be carriers. ...
... • Affected males, when they survive to reproductive age, cannot transmit the phenotype to their offspring unless they mate with a carrier or affected female. Their daughters, however, will all be carriers. ...
Worms!
... females reproductive tracts, and inject sperm into them Sperm do not have flagellae, it uses pseudopodia to move ...
... females reproductive tracts, and inject sperm into them Sperm do not have flagellae, it uses pseudopodia to move ...
Sex chromosome abnormalities
... Tfm, an X-linked gene that codes for testosterone receptors. Females who are XTfmXtfmare normal. Their XtfmY progeny, expected to be males, develop into sterile females (condition is called testicular feminization or complete androgen insensitivity). Although the ovotestes become testes and ...
... Tfm, an X-linked gene that codes for testosterone receptors. Females who are XTfmXtfmare normal. Their XtfmY progeny, expected to be males, develop into sterile females (condition is called testicular feminization or complete androgen insensitivity). Although the ovotestes become testes and ...
Sexual dimorphism
Sexual dimorphism is a phenotypic differentiation between males and females of the same species. This differentiation happens in organisms who reproduce through sexual reproduction, with the prototypical example being for differences in characteristics of reproductive organs. Other possible examples are for secondary sex characteristics, body size, physical strength and morphology, ornamentation, behavior and other bodily traits. Traits such as ornamentation and breeding behavior found in only one sex imply that sexual selection over an extended period of time leads to sexual dimorphism.