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- In the greater ani (Crotophaga major) (Riehl 2011) and the acorn woodpecker (Melanerpes formicivorus) (Koenig et al. 1995), a group of females shares the same nest. However, when some females begin to lay eggs in the communal nest, their eggs are often tossed from the nest by other group members. Use a cost–benefit approach to explain why females whose eggs are destroyed still remain with the group. Do you think the egg-tossing females are really cooperating with the others in their group? Please Do not write from an online sourceSea urchins live in marine communities that include a variety of species living in close proximity. Most of these species, including sea urchins, have external fertilization, a reproductive strategy that potentially has a low probability of sperm and egg contact. List several adaptations of sea urchins that help ensure successful reproduction. Explain.give inherent constraints associated with the biology of the of zebra fish and quail orchicken eggs that hinders the complete assessment of its embryonic development conditions.
- Often reliquishing the young ones owing to food shortage is one of the common behaviour exhibited by mice.Clarify how this conduct might have developed due to life history and reproductive compromises?please exaplain The juvenile stages of some insects are merely small versions of the adult: they eat the same type of food and live in the same habitats. Which of the following describes this type of metamorphosis? 1. radula 2. complete 3. incomplete 4. rudimentary 5. rapidLife cycle complexity Describe a generalized complex life cycle for a parasite that would encompass one or more intermediates hosts and multiple larval stages. Why would this heteroxenic life cycle be an evolutionary advantage over a monoxenic one?
- A(n)___________ is a general explanation of naturalphenomena supported by extensive, reproducible tests andobservations. In contrast, a(n)___________ is a proposedexplanation for observed events. To answer specificquestions about life, biologists use a general process calledthe___________ .Question 1. What is the most recent estimated time of divergence between invertebrates and vertebrates, based on the ATPase 6 gene? What is the most distant? Question 2. Based on the most recent plausible age, which gene gives the most recent time for the divergence between invertebrates and vertebrates? According to that estimate, how long ago was this? Question 3. Based on the most distant plausible age, which gene gives the most distant time for the divergence between invertebrates and vertebrates? According to that estimate, how long ago was this?Sexual reproduction in unpredictable environments provide immediate benefits to individuals including the following except -- A. There are more opportunites for offspring to specialize in different niches in an environment. B. The chance that the offspring of sexual ndividuals will be well-matched to their environment increases. C. Bet-hedging strategies are involved for increasing offspring fitness. D. Reduction of competition for resources among genetically related offspring.
- In the article called "Sexual dimorphism and male mating success in the tentacled blenny, Parablennius tentacularis (Teleostei: Blenniidae)" The sexually selected trait or traits in question. Based on what you gathered from the Article, What is the trait determining which individuals get to reproduce that the authors are interested in?Question1. The agave bush and the desert tortoise are both found in the Sonora Desert in the Southwest of North America. Known as the century plant, the agave blooms in June to August but only once after about 25 years and then dies. In contrast, tortoises may live in excess of 100 years and when they reach the age of around 15 years they lay eggs between May and July at 2-3 year intervals. What type of reproductive strategy is demonstrated by each of these species?In your own perspective, what is the significance of knowing the type of metamorphosisof insect? Provide 2 scenarios where you utilize this information.