The digger bee’s “postcopulatory courtship” consists of elaborate tactile stimulation that the male provides his partner after she has accepted his sperm. Why is this behavior a Darwinian puzzle, and what might its adaptive value be? Dont' write from any online source.
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The digger bee’s “postcopulatory courtship” consists of elaborate tactile stimulation that the male provides his partner after she has accepted his sperm. Why is this behavior a Darwinian puzzle, and what might its adaptive value be?
Dont' write from any online source.
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- Phalaropes are shore birds with brightly colored females and dull colored males. Females are larger than males and compete with each other for access to males. Considering sexual selection theory, select the idea(s) below that seem(s) most plausible in light of the pattern of sexual dimorphism? Pick all that apply This is a picture of a brightly colored female: O Females incubate eggs and care for the young. Males incubate eggs and care for the young Males are choosy. males are not choosy why do females have a greater disadvantage compared to males concerning sexual reproduction? How has this difference between the sex shape sexual selection in general? Choose one form of communication and explain how it is used by competing sex is attracting a mate. Monarch and Viceroy butterflies look very similar. Both have orange wings with black stripes. However, only Monarch butterflies are toxic. Viceroy butterflies are completely edible and perfectly tasty. Predators avoid them, though, because they look like the inedible Monarch butterfly. Which set of terms below describe Monarch and Viceroy butterflies? O Aposematic coloration and Batesian mimicry Aposematic coloration and Mullerian mimicry O Cryptic coloration and Batesian mimicry Cryptic coloration and Mullerian mimicry
- With your knowledge of sexual selection theory, can you formulate a hypothesis that explains why female courtship might have evolved in this species? Is there anything about pipefish biology that might support your hypothesis?Which of the following observations or hypotheses is most consistent with the Bateman-Trivers paradigm? sperm are frail and few can actually fertilize an egg males attempt to secure large territories to attract many females male spiders mate only once are sometimes eaten by females O females seek many mates to ensure genetic diversity in their youngSatellite and attached male horseshoe crabs do not have the same reproductive success. Why hasn’t sexual selection eliminated the low-payoff satellite option if males exercising this option do not leave as many descendants as attached males do? Please don't write from any online source.
- You want to distinguish between two hypotheses to explain the patterns you see: 1) Males not feeding the young is an adaptation to dimorphism 2) If males don't feed the young in a species, it will allow them to become brightly colored To begin to address this question, map the characters changes in dimorphism and males feeding the young onto each of the trees on the previous page. CHARACTER SEXUAL DIMORPHISM MALES FEED YOUNG Cassin's Vireo No No Red Fox Sparrow Cape May Warbler Cedar Waxwing Golden-Crowned Kinglet Pyrrhuloxia Yes No No No No Yes No Yes Yes No California Gull No Yes Note: This data is fictional 5) Which of the hypotheses in part 4 is consistent with your analysis? Explain why in a brief paragraph.Which of the following set of characteristics would best described a K-selected species (e.g. an elephant)? early reproduction with many, small offspring and short-lived early reproduction with few, large offspring and short-lived late reproduction with few, large offspring and long-lived O late reproduction with many, small offspring and long-livedBased on the fictional graph below investigating the impact of color on the # of eggs laid by female dragons, which of the following statements is true? Select ALL correct answers. Number of Eggs A A B Red Green Blue Dragon Color Blue dragons lay significantly less eggs than both red and green dragons. When researchers preformed a statistical test comparing the number of eggs laid by red & green dragons, the p-value was < 0.05. When researchers preformed a statistical test comparing the number of eggs laid by red & blue dragons, the p-value was < 0.05. Without error bars, we can not infer statistical significance from this graph.
- You are studying the effect that the commonly used agricultural pesticide "Pestkill" that has been found in bodies of water has on the survival rate of eggs of dragonflies. How will you label your X and Y axes? Check all that apply. A "Pestkill concentration (mg)" as X axis label, "percentage of eggs hatched in two weeks" as Y axis label B "Pestkill" as X axis label, "number of eggs" on Y axis C "Pestkill concentration (mg)" as Y axis label, "percentage of eggs hatched in two weeks" as X axis label D "Pestkill" as Y axis label, "number of eggs" on X axisTermites are a diploid eusocial species in which a colony's queen and king produce both sons and daughters through sexual reproduction. What evolutionary reasons may explain why workers forgo reproduction unless the king or queen dies? O Workers have a higher direct fitness than kings and queens. Workers that leave the home colony are unlikely to establish a new colony. O Workers increase their indirect fitness by contributing to the survival of their siblings. O Workers are more closely related to their siblings than they are to their own offspring.To conduct their experiment, the researchers collected L. peronii eggs from a natural stream. After the eggs had hatched, tadpoles were raised in artificially constructed 2 L containers in a laboratory. All containers were filled with 1 L of filtered tap water, and the water was changed every other day. Thirteen tadpoles were placed in each container, and the tadpoles were exposed to a 12-hour light: 12-hour dark photoperiod. All tadpoles were fed thawed spinach daily. The researchers randomly placed the tadpoles into containers exposed to one of four treatments, with nine replicates of each treatment, as follows: Low UVBR (<6.0 kJ/m2), low temperature (15OC) Low UVBR (<6.0 kJ/m2), high temperature (26OC) High UVBR (>70.0 kJ/m2), low temperature (15OC) High UVBR (>70.0 kJ/m2), high temperature (26OC) The researchers recorded the number of tadpoles still alive out of the original 13 in a container (percent survival) at different time periods. Their results at Week 4,…