Model organisms have convenient characteristics for scientific study, the findings from which may be applied to other organisms. Which of the following characteristics was lacking from Thomas Morgan's Drosophila fruit flies that is found in many model organisms? Discrete character traits O High fecundity OQuick generation time Self-compatibility O Mutations
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- Ancient societies used knowledge that traits are heritable in domesticating animals and developing agricultural crops. What might account for the failure to recognize that the same processes operate in humans?Background: In class we did a project about m and m’s and there ability to evolve and natural selection. (Yes I know they can’t actually evolve it was just used as a example in class) however I can’t figure out this question. Occasionally a mutant may occur and produce a candy that is misshapen or Pointier or flatter than the rest. Often this proves to be a weakness, but a rare mutation may confer extra M&M durability. Other mutations in M&Ms could occur ( like ones that result in a new color). A mutant un you population represents a new _________. What goes in the blankFrom a biological viewpoint, speculate as to why many traits seemto fit a normal distribution. Students with a strong background inmath and statistics may want to explain how a normal distributionis generated, and what it means. Can you think of biological examplesthat do not fit a normal distribution?
- It has been found that many insect pest populations have become more resistant to pesticides over time. How might this have occurred? O The individual insects who were naturally resistant to the pesticide were able to reproduce and pass on their genes. This created future generations of insects that were more naturally resistant to the pesticides. O Individual insects decided they did not like the pesticides and went to the doctors O The chemical pesticides given to insects have mutated due to climate shifts and no longer work. O The pesticide killed off the insects and new ones moved into the region, who have not been exposed to the pesticide yet.Mendelian inheritance principles are the foundation of modern genetics highlighting the role of particular factors that are responsible for the expression of traits in living organisms. The story remained continue in the last century and further explanations were provided by various scientists in different era. Traits are governed and triggered from the brain of cell. How brain of cell execute the whole cell machinery to express different traits in plants.Many plants (and some animals) have defensive chemicals to protect themselves from predation. How did these compounds evolve? Choose All That Apply there was a mutation in an existing gene that resulted in a new enzyme function Oa different (or slightly altered) compound was made that was slightly toxic to other organisms O plants/animals with the toxic compound were eaten less O there was a mutation in a gene as a result of the plant/animal being eaten O presence of the toxic compound reduced the fitness of the plant/animal U the gene that codes for the enzyme that produces the toxic compound became more prevalent
- Because all known living organisms share a common system for storing and utilizing genetic information, it would suggest: that all life forms on Earth share a common ancestor that the study of one organism’s genes may reveal principles that apply to other organisms thatgenesfromoneorganismcouldpossiblyfunctioninanotherorganism that all of the above ideas (1-4) are likelyA scientist states that a group of primates has undergone genetic drift. The study of which subject would have BEST supported this statement? O selection pressures in the primates' environment O mutagens in the primates' environment O a parent population from which the primates have become separated i O a population of a distantly related primate species in the same regionThe ability of genomes to respond to the outside environmentby changing the developmental trajectories of organisms opens up entire worlds of research. Is evolution selecting “teams” of organisms?
- GWhat question could be aske X GResearchers can geneticallys X ck X Flock Y Flock Z Total x XVT-FL-EOC-Biology 1 - Edger X genuity.com/Player/ Lab: Natural Selection Assignment: Reflect on the Lab Active Apply the Simulation to the Real World Researchers can genetically select lettuce crops to cultivate for pest resistance. One of the concerns scientists have about genetically selected crops is that some traits for pest resistance may affect the texture of lettuce. What question could be asked to begin this investigation by looking at a measurable dependent variable? * What is the effect of crop selection for pest resistance on the distribution of leaf size in a population of plants? O What is the effect of crop selection for pest resistance on the toughness of lettuce leaves? O What is the effect of crop selection for pest resistance on the sale of green salad in grocery stores? What is the effect of crop selection for pest resistance on the texture most preferred for consumption by…Group and Mutation Time Taken to Collect Candy Time Taken to Eat Candy A Extra long nails 1 minute 3 seconds 8 minutes 12 seconds B No digits; hands paddle-like 15 seconds 7 minutes 18 seconds C Normal 22 seconds 2 minutess 44 seconds D Hands fused in frontof body; no range of motion Did not collect 15 pieces.Collected 11 pieces Ate 11 pieces;4 minutes 12 seconds E Webbing on hands and feet 11 minutes 45 seconds 17 minutes 12 seconds F No peripheral 3 minutes 2 seconds 2 minutes 52 seconds G Blind Did not collect 15 pieces.Collected 4 pieces in 4 minutes Ate only 4 pieces;1 minute 16 seconds H Short legs; normal numberof digits on hands and feet 55 seconds 3 minutes 2 seconds Natural selection involves changes in the genetic makeup of a population over a period of time. The random change of DNA from parent to offspring, called mutations, can help produce variations in offspring. Some mutations can be helpful, while others can be harmful. In this experiment,…If I were working with the fruit fly Drosophilaand want to determine whether a newly found characteristic is dominant or recessive. What experiment will help me determine the dominance of the trait.