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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.
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- Questions for Years since Separation:1) When genetic researchers compare the DNA of Northern Asian population versus NativeAmerican populations, they find a 0.07% difference. The “Mitochondrial Clock” formula tells usthat there has been about _____________ years since the separation of these two groups.2) When comparing the DNA of Northern Asians and European populations, they discovered a0.1% difference. The “Mitochondrial Clock” formula tells us that there has been about______________ years since the separation of these two groups.3) When comparing the DNA of Indonesian peoples to either the European group or the NorthernAsians, they find a 0.12% difference. The Mitochondrial Clock formula tells us that there hasbeen about _____________ years since the separation of these two groups.4) When researchers compare the DNA of African populations to any other group they find a 0.2%difference. The Mitochondrial Clock formula tells us that there has been about__________________ years since…QUESTION 36 In tropical rainforests, vegetation layers are structured according to ____. a. the plants’ needs for sunlight b. nutrient availability and uptake by plant roots c. how well each plant handles predation by herbivores d. sensitivity to temperature changes e. how deep the rainfall penetrates into the forestQuestion 10 : Animal: Northern Raccoon. Scientific name: Procyon Lotor a) Current status of the species and any threats to the population of the species. b) Is it a protected species? Endangered? Threatened? Why? c) In this section, including what can be done to protect and preserve this species. *If the answer makes sense and is explained in detail, I'll give up a thumb up. Promise!
- Question:- 1b. If the undertermination thesis is false, then scientific theories can be deduced from observation. The undetermination thesis is false. Therefore, scientific theories can be deduced from observation. This arugment is: (A) Valid but unsound (B) Valid and sound (C) Invaild (D) None of the above 1c. Suppose the best explanation for the origin if the universe is the God. From this it follows that: (A) God Exists (B) God probably exists (C) God is a good explanation for the origin of the universe (D) None of the aboveQuestion 10 In a population of mountain lions, 9% of the individuals suffer from a disease caused by a recessive allele (aa). Calculate the frequency of both the dominant and recessive alleles. 2. What is the percentage of homozygous dominant individuals and what is the percentage of heterozygous individuals in the population?Question 1 - Photosynthesis lab Four common plant pigments are likely to be separated and visualized by the paper chromatography experiment. List the expected colors of each of these four pigments below.A) CaroteneB) Chlorophyll aC) Chlorophyll bD) Xanthophyll Explain the mechanism of how floating disks correspond to the rate of photosynthesis. List 2 controlled variables in the leaf disk assay List 2 manipulated variables in the leaf disk assay What is the purpose of adding baking soda to the leaf disk assay? What would you expect during the leaf disk assay if baking soda was not added at all?
- Question 1. In total, how many plant populations were established in this experiment? In each of these populations, what was the initial frequency of each plant genotype? Question 2. Did evolution occur in the control populations? If so, what factor or factors may have caused evolution by natural selection in these populations? Explain your answer. Question 3. Did evolution occur in the populations exposed to the generalist herbivore? If so, what factor or factors may have caused evolution by natural selection in these populations? Explain your answer. Question 4. Compare results for the control and generalist herbivore treatments. Why do you think the experiment showed the results that it did? Plant Genotypes Suppose the researchers conduct another experiment to investigate whether a generalist herbivore can affect the natural selection of a plant species. They establish ten replicate populations of the plant and expose each to two experimental treatments: a control (no herbivore) and…QUESTION 16 In Tipper's negative priming task, participants are ____________ to say the name of a probe object when that object was just previously _______________. a. slower; attended to b. faster; ignored c. slower; ignored d. faster; attended to e. none of the aboveQUESTION 20 Countries and areas where people have good access to family planning, economic opportunities for women, and schooling for girls generally higher birth rates than those where these things are less available. True False
- QUESTION 23 When using composting piles, it is important to _____. a. avoid adding food products or similar items b. dispose of the compost on a regular basis c. avoid adding weeds and other plants d. mix or rotate them and avoid adding hazardous materials e. fertilize the compost pileQUESTION 8 Morphological differences are abundant among many species. We make assumptions about why adaptations exist, but to understand whether a specific trait is a adaptive and why, researchers must create experiments that have all the following, EXCEPT: a. replication of each treatment to ensure reliability of results. b. hypotheses that are testable and falsifiable. c. include control groups. d. exceedingly small sample sizes in each treatment group. e. experimental design that enables all full interpretation of differences.QUESTION 11 The primary reason that polar bear populations are declining is because the higher temperatures resulting from climate change cause them to overheat due to their thick fur. True False