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Genetic Variation
Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.
Quantitative Genetics
Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.
A community hs 9 species and 12 links. What is the connectivity for this community?
answer is 0.15
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- Which statments are correct? Question 25 options: Species diversity tends to increase with evapostranspiration Species diversity tends to increase with when parasitism is low Species diversity tends to increase with island area Species diversity tends to be higher when disturbance frequency is low Species diversity tends to increase with decreasing latitudeIf the slope on a rank abundance curve is m = 0, the species diversity in the community will be? Group of answer choices equal high more information needed lowDiscuss at least 5 services provided by biodiversity. Discuss human influences on such services you answered above and the consequences of losing ecosystem services.
- Community 1 is formed of species A, B, C, D, and E. Community 2 is formed of species A, C, F, G, H. What is beta diversity, as estimated using the Jaccard indexEcology and Biology: Shannon Diversity Index: Definition & Example The Shannon Diversity Index (sometimes called the Shannon-Wiener Index) is a way to measure the diversity of species in a community. Denoted as H, this index is calculated as: H = -Σpi * ln(pi) where: Σ: A Greek symbol that means “sum” ln: Natural log pi: The proportion of the entire community made up of species i The higher the value of H, the higher the diversity of species in a particular community. The lower the value of H, the lower the diversity. A value of H = 0 indicates a community that only has one species. The Shannon Equitability Index is a way to measure the evenness of species in a community. The term “evenness” simply refers to how similar the abundances of different species are in the community. Denoted as EH, this index is calculated as: EH = H / ln(S) where: H: The Shannon Diversity Index S: The total number of unique species What is the Shannon diversity index value for this community? What…Identify the Shannon diversity index in the two hypothetical communities below. Which of the two communities is more diverse? Round off your answer to the nearest hundredth Species A Community A B Community B A 12 5 B 1 5 C 3 3 D 4 7
- Reintroduction of species into their native ecosystem is a controversial topic. Provide at least 3 reasons in favor of this and 3 against the reintroduction of native species.which help stabilize a community? presence of keystone and dominant species high conectivity aming species in community large number of different species in community all tend to do destabilize community all help stabilize communitySpecies Number of Individuals puffballs (Lycoperdon sp.) 12 chanterelles (Cantharellus cascadensis) 18 coral mushroom (Ramaria sp.) 10 lion's mane (Hericium abietus) honey mushrooms (Armillaria mellea) 5 You can check out photos of all of these mushrooms here 2! What is the effective number of species in this community (1/D)? Record your answer with 2 decimals and no units. LO
- You have determined that a community consisting of 12 species has Shannon Diversity index score of 1.784. What is the species Evenness of this community? 0.34 0.84 0.62 0.71Which community shown in the pictures has the highest Shannon Index (H)?Curves A, B, and C show the relationship between species richness (number of species) and NPP (net primary productivity). These three curves represent three separate experiments that took place in the same environment (soil, temperature, and water). The difference between the three curves was the order in which the 20 species were added to the environment. Which experiment required more species to finally add the one key species that contributes a large amount of NPP? NPP 2 st 4 B C 6 8 10 12 Species richness 14 16 18 20