WHAT IS EVOLUTION? General definition: a change or modification
... X. MALE MATE CHOICE – SEX ROLE REVERSAL e.g., pipefish by Rosenqvist and colleagues two species: Syngnathus typhle and Nerophis ophidion ...
... X. MALE MATE CHOICE – SEX ROLE REVERSAL e.g., pipefish by Rosenqvist and colleagues two species: Syngnathus typhle and Nerophis ophidion ...
Reproductive Patterns
... The process by which offspring are formed WITHOUT the FUSION of an egg and sperm. Only ONE individual is involved in the process. There are many different forms such as: BUDDING, BINARY FISSION and FRAGMENTATION. Organisms that reproduce asexually do NOT have a gender or sex organs. For example: The ...
... The process by which offspring are formed WITHOUT the FUSION of an egg and sperm. Only ONE individual is involved in the process. There are many different forms such as: BUDDING, BINARY FISSION and FRAGMENTATION. Organisms that reproduce asexually do NOT have a gender or sex organs. For example: The ...
True or False?
... • Bandura Social Learning Theory •Focus on observation and imitation as learning mechanism. •Learning mostly social. Reinforcement increases likelihood of imitation, but it is not necessary for learning. •Reciprocal Determinism: child-environment influences operate in both directions. ...
... • Bandura Social Learning Theory •Focus on observation and imitation as learning mechanism. •Learning mostly social. Reinforcement increases likelihood of imitation, but it is not necessary for learning. •Reciprocal Determinism: child-environment influences operate in both directions. ...
4xpage
... Social Learning Theory on Gender Typing Differential reinforcement - children are rewarded for sex-appropriate behaviors, punished for behaviors appropriate for the other sex. Observational learning - children adopt the attitudes and behaviors of same-sex models. Consistent evidence? Inconsisten ...
... Social Learning Theory on Gender Typing Differential reinforcement - children are rewarded for sex-appropriate behaviors, punished for behaviors appropriate for the other sex. Observational learning - children adopt the attitudes and behaviors of same-sex models. Consistent evidence? Inconsisten ...
breeding systems and reproductive strategies of mammals
... • Description of mating behavior and parental care by both sexes • Parental care & potential rate of reproduction of each sex • If males contribute no parental care (many mammals), they have high potential rate of reproduction; fitness limited by access to females; males most competitive sex ...
... • Description of mating behavior and parental care by both sexes • Parental care & potential rate of reproduction of each sex • If males contribute no parental care (many mammals), they have high potential rate of reproduction; fitness limited by access to females; males most competitive sex ...
Excretory & Reproductive Anatomy
... Varying degree of connection with reproductive system Little connection in most advanced fishes ...
... Varying degree of connection with reproductive system Little connection in most advanced fishes ...
Female Reproductive System
... (A) They all contain homologous pairs of chromosomes. (B) The location of the testes within the scrotum aids in the production of sperm needed for zygote formation. (C) Mitotic cell division in involved in the formation of the testes and scrotum, and meiosis is involved in the production of sperm, w ...
... (A) They all contain homologous pairs of chromosomes. (B) The location of the testes within the scrotum aids in the production of sperm needed for zygote formation. (C) Mitotic cell division in involved in the formation of the testes and scrotum, and meiosis is involved in the production of sperm, w ...
Sex Ratios
... females are more likely to produce sons, and lower-quality females are more likely to produce daughters. This is thought to occur because (1) higher-quality females are able to provide more resources to their offspring, and (2) competition for mates between males is intense, with only the highest-qu ...
... females are more likely to produce sons, and lower-quality females are more likely to produce daughters. This is thought to occur because (1) higher-quality females are able to provide more resources to their offspring, and (2) competition for mates between males is intense, with only the highest-qu ...
biol b242 sex and sexual selection
... under greater sexual selection. Females rarely benefit much from more mates; males benefit from virtually unlimited matings. In elephant seals, > 90% males father no offspring; The fittest male fathered 93. But> 50% females have one or more offspring. Males have higher variance in offspring number. ...
... under greater sexual selection. Females rarely benefit much from more mates; males benefit from virtually unlimited matings. In elephant seals, > 90% males father no offspring; The fittest male fathered 93. But> 50% females have one or more offspring. Males have higher variance in offspring number. ...
Mice Breeding Protocol - Universidad Central del Caribe
... fight and can kill one another. They can cause damage to the females and often will kill the offspring. Having multiple males also results in them producing more scent. 3- The female is placed in the male’s box. The breeding date must be written down. 4- Detection of gestation status a- Performing v ...
... fight and can kill one another. They can cause damage to the females and often will kill the offspring. Having multiple males also results in them producing more scent. 3- The female is placed in the male’s box. The breeding date must be written down. 4- Detection of gestation status a- Performing v ...
Untitled - Knowsley Safari Park
... This is used when fighting or in defense. Females have a “spike” at the end of their tail. This is curled to imitate a scorpion when threatened. They will also wave their front legs around to appear larger and more intimidating to predators. They have both hooks and “sucker pads” on their feet to he ...
... This is used when fighting or in defense. Females have a “spike” at the end of their tail. This is curled to imitate a scorpion when threatened. They will also wave their front legs around to appear larger and more intimidating to predators. They have both hooks and “sucker pads” on their feet to he ...
doc Order code 81730063 Topic explaining sexual selection with
... P. pustulosus add chucks to their calls to attract females. And females were significantly attracted. On the other hand, P. Coloradorum males produced triple or repeated calls to attract females. The female species P. Coloradorum preferred double or triple calls to single calls. This element illustr ...
... P. pustulosus add chucks to their calls to attract females. And females were significantly attracted. On the other hand, P. Coloradorum males produced triple or repeated calls to attract females. The female species P. Coloradorum preferred double or triple calls to single calls. This element illustr ...
Practice Midterm Solutions
... 3. In humans, there is a dominant allele that causes vitiligo, where small-unpigmented spots appear on the body. Also, there is a recessive allele for another gene that causes albinism, which causes the entire body to be unpigmented. Vitiligo cannot be seen in albinos. A man with vitiligo had an alb ...
... 3. In humans, there is a dominant allele that causes vitiligo, where small-unpigmented spots appear on the body. Also, there is a recessive allele for another gene that causes albinism, which causes the entire body to be unpigmented. Vitiligo cannot be seen in albinos. A man with vitiligo had an alb ...
`Wingman` -- how buddies help alpha males get the girl
... apprenticeship or by forming alliances with other males who later act as their betas." These results contrast with those from studies of other birds with cooperative courtship displays: wild turkeys strut cooperatively with close relatives, and ruffs (a shorebird) form alliances of males that often ...
... apprenticeship or by forming alliances with other males who later act as their betas." These results contrast with those from studies of other birds with cooperative courtship displays: wild turkeys strut cooperatively with close relatives, and ruffs (a shorebird) form alliances of males that often ...
eandb-essay-1 15 kb eandb-essay
... mate with. Sexual selection has selected for these traits (larger, more aggressive males and the existence of the curved extension) as they lead to an increased success in reproduction for the males. Sexual selection has led to females in general being more choosy about their mates in two ways, firs ...
... mate with. Sexual selection has selected for these traits (larger, more aggressive males and the existence of the curved extension) as they lead to an increased success in reproduction for the males. Sexual selection has led to females in general being more choosy about their mates in two ways, firs ...
A) The evolution of sex
... Populations grow faster if parthenogens. Suppose each female produces 2.4 progeny: ...
... Populations grow faster if parthenogens. Suppose each female produces 2.4 progeny: ...
Chapter 11
... Not all flowers are dioecious. In this case larger flowers are usually more successful. Larger flowers are visited preferentially by bees and butterflies. Larger flowers will be visited first and their pollen, once delivered to the female, will have a head start on forming a pollen tube in the pisti ...
... Not all flowers are dioecious. In this case larger flowers are usually more successful. Larger flowers are visited preferentially by bees and butterflies. Larger flowers will be visited first and their pollen, once delivered to the female, will have a head start on forming a pollen tube in the pisti ...
10-Sociality
... Parthenogenesis (unisexual species) Possible advantages of sexual reproduction include: two parents can raise twice as many progeny mix genes with desirable genes (enhances fitness) reduced sibling competition heterozygosity biparental origin of many unisexual species ...
... Parthenogenesis (unisexual species) Possible advantages of sexual reproduction include: two parents can raise twice as many progeny mix genes with desirable genes (enhances fitness) reduced sibling competition heterozygosity biparental origin of many unisexual species ...
Evolution of Sex, Part 1.
... difficulties & dangers (its handicap) must be EXTREMELY FIT! Thus, be extremely attractive and chosen preferentially by females through sexual selection. ...
... difficulties & dangers (its handicap) must be EXTREMELY FIT! Thus, be extremely attractive and chosen preferentially by females through sexual selection. ...
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 ...
Animal responses to biotic environment
... The sex act is adaptive as it requires cooperation, temporary halt of aggressive behaviour, a system of communication and species recognition. ...
... The sex act is adaptive as it requires cooperation, temporary halt of aggressive behaviour, a system of communication and species recognition. ...