1) Sexual selection usually acts more strongly on males, i.e., males compete with other males for...
1) Sexual selection usually acts more strongly on males, i.e., males compete with other males for access to females, and females choose among potential male mates. Give one specific example of role-reversed mate choice (the male chooses among females) (1). What kinds of female traits do males base their choice on (1)? What types of benefits do males receive (1)? How does this differ from female mate choice (2)?
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Homework Answers
Usually, females choose their potent partner as females show more parental investment than males. There are some species where the males show more parental care in those case males are choosy. 1) one of the example is pipe fish which is a realtive of sea horse, in which females deposit eggs in the pouch of male.
2)The qualities such as size of female, competitive sex usually show ornamentals,and the choosy partner will show visual bias so that a particular trait of other will show appealing to choosy one.
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1) Sexual selection usually acts more strongly on males, i.e.,
males compete with other males for...
Need help with this problem please "During the mating season, the males of lekking species gather...
Need help with this problem please
"During the mating season, the males of lekking species gather into small clusters of territories, called leks, or arenas. Each male occupies a small space within the lek, and although the whole area may only be a few meters across, there may be thirty or more males displaying in a large lek. Males dance with frantic intensity, sometimes oblivious to most everything around them, and their intensity increases when females are present. Females visiting...
Background: Sexual selection can favor extreme versions of certain traits. The good genes hypothesis proposes that...
Background:
Sexual selection can favor extreme versions of certain traits.
The good genes hypothesis proposes that females choose to mate with
males that have high survivorship. But how can the female measure
the male's survival skills? The good genes hypothesis proposes that
male secondary sexual characteristics advertise his genetic
quality. Extravagant ornamentation equals high survivorship.
Male barn swallows (Hirundo rustica) have longer tail feathers
than females and the length of male tail feathers varies in a
population. Anders Moller wanted...
QUESTION 29 In a population of alligators, 84 out of 100 have green skin and the...
QUESTION 29 In a population of alligators, 84 out of 100 have green skin and the rest have albino skin. Albino skin is recessive to green skin. How many individuals do you expect to be homozygous for green skin color? OA. 84 B. 16 OC.4 D.36 E. More information is needed. QUESTION 30 Sexual selection: A. Acts on males because females are the "choosy" sex. B. Creates females that are showy in terms of traits to attract mates. C. Favors...
ON MULTIPLE CHOICE, CIRCLE LETTER OF ALL CORRECT ANSWERS!!! 31. (2 pts) True or False. Sexual...
ON MULTIPLE CHOICE, CIRCLE LETTER OF ALL CORRECT ANSWERS!!! 31. (2 pts) True or False. Sexual dimorphism is the phenomenon that caused biologists to focus on sexual selection. 32. ( pts) What is the most important basic underlying difference between the sexes that causes sexual selection to usually operate differently in males than in females? A. The cost of reproduction is usually higher in females. B. The cost of reproduction is usually higher in males. C. Males have only 1...
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Question 8 1 pts Which of the following is NOT true about sexual selection? Sexual selection...
Question 8 1 pts Which of the following is NOT true about sexual selection? Sexual selection operates only on males because they are the ones that compete and females are the "choosy" ones Wb Which types of sexual signals evolve in a given lineage may depend on pre-existing sensory biases (eg. whether individuals can see in color, or what sounds they like) Sexual signals are often "expensive" (in energy, or risks to safety), which means that usually only healthy individuals...
. Male drosophila typically have a higher potential reproductive output than females because a. The more...
. Male drosophila typically have a higher potential reproductive output than females because a. The more females fertilized, the higher the male's fitness b. Females are limited by the resources that they have to use to produce eggs c. Males do not provide any parental care d. All of the above e. None of the above 2. The handicap theory of mate choice in sexual selection says that : a. Male display genes spread and female choice genes only spread...
asap Chapter 08 Social Relations: 1-26 1. Fitness is defined as the A. health of an...
asap
Chapter 08 Social Relations: 1-26 1. Fitness is defined as the A. health of an individual organism. B. ability of an organism to adap C. quality of offspring produced. D. number of genes contri an organism to adapt to new environmental situations. of genes contributed by an individual to the next generation. 2. Secondary sexual ondary sexual characteristics are often considered a handicap because of increased A. predation. B. competition C. parasitism. D. infertility. 3. In any animal, the...
1. What is "sperm competition"? What is its significance? 2. Describe what "sperm removal" is, and...
1. What is "sperm competition"? What is its significance? 2. Describe what "sperm removal" is, and give one specific example of an insect or arachnid species in which sperm removal occurs. 3. How can sperm quantity, morphology, and other characteristics influence male reproductive success in insects? 4. Define and describe: "cryptic female choice" 5. Déscribe the selective influence of cryptic female choice on the evolution of male genitalia insects. Provide examples as needed. 6. What is "postcopulatory selection?" Provide an...
Need help with this problem please
"During the mating season, the males of lekking species gather into small clusters of territories, called leks, or arenas. Each male occupies a small space within the lek, and although the whole area may only be a few meters across, there may be thirty or more males displaying in a large lek. Males dance with frantic intensity, sometimes oblivious to most everything around them, and their intensity increases when females are present. Females visiting...
Background:
Sexual selection can favor extreme versions of certain traits.
The good genes hypothesis proposes that females choose to mate with
males that have high survivorship. But how can the female measure
the male's survival skills? The good genes hypothesis proposes that
male secondary sexual characteristics advertise his genetic
quality. Extravagant ornamentation equals high survivorship.
Male barn swallows (Hirundo rustica) have longer tail feathers
than females and the length of male tail feathers varies in a
population. Anders Moller wanted...
QUESTION 29 In a population of alligators, 84 out of 100 have green skin and the rest have albino skin. Albino skin is recessive to green skin. How many individuals do you expect to be homozygous for green skin color? OA. 84 B. 16 OC.4 D.36 E. More information is needed. QUESTION 30 Sexual selection: A. Acts on males because females are the "choosy" sex. B. Creates females that are showy in terms of traits to attract mates. C. Favors...
ON MULTIPLE CHOICE, CIRCLE LETTER OF ALL CORRECT ANSWERS!!! 31. (2 pts) True or False. Sexual dimorphism is the phenomenon that caused biologists to focus on sexual selection. 32. ( pts) What is the most important basic underlying difference between the sexes that causes sexual selection to usually operate differently in males than in females? A. The cost of reproduction is usually higher in females. B. The cost of reproduction is usually higher in males. C. Males have only 1...
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. Male drosophila typically have a higher potential reproductive output than females because a. The more females fertilized, the higher the male's fitness b. Females are limited by the resources that they have to use to produce eggs c. Males do not provide any parental care d. All of the above e. None of the above 2. The handicap theory of mate choice in sexual selection says that : a. Male display genes spread and female choice genes only spread...
asap
Chapter 08 Social Relations: 1-26 1. Fitness is defined as the A. health of an individual organism. B. ability of an organism to adap C. quality of offspring produced. D. number of genes contri an organism to adapt to new environmental situations. of genes contributed by an individual to the next generation. 2. Secondary sexual ondary sexual characteristics are often considered a handicap because of increased A. predation. B. competition C. parasitism. D. infertility. 3. In any animal, the...
1. What is "sperm competition"? What is its significance? 2. Describe what "sperm removal" is, and give one specific example of an insect or arachnid species in which sperm removal occurs. 3. How can sperm quantity, morphology, and other characteristics influence male reproductive success in insects? 4. Define and describe: "cryptic female choice" 5. Déscribe the selective influence of cryptic female choice on the evolution of male genitalia insects. Provide examples as needed. 6. What is "postcopulatory selection?" Provide an...
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