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Each of the statements below is a hypothesis about why individuals of a particular kind of moth pull their forewings forward when poked. For each statement, label it (a) if it is a proximate hypothesis and (b) if it is an ultimate hypothesis.
1. The behavior is learned.
2. Wing flipping scares some predators away.
3. The behavior is the product of a special set of muscle contractions.
4. The behavior is a modified version of wing movements that many moths use to raise their body temperature in order to begin flying.
5. The moth's genes influence the way the adult animal's nervous system forms connections between its muscles and its wings.
Assume you are studying three traits in tropical fish: black and white striped pattern is completely dominant to solid color. For eye color, brown eyes are dominant to hazel eyes.
Assume you are conducting a mark-recapture study of a population of snouters. During your first sampling period you go out and catch or mark or release 141 snouters.
What would your expected results be (growth or no growth) if you transformed bacteria with a plasmid that had ampicillin and kanamynic (another antibiotic) resistance and plated them. Situation growth or no growth and explain your reply.
Which organelle generates oxygen? Which organelle consumes oxygen? Explain why are viruses not considered to be living?
Purine biosynthesis is allowed to take place in the presence of [N15]aspartate, and the newly synthesized GTP and ATP are isolated. What positions are labeled in the two nucleotides.
A cell whose cytoplasm has a concentration of 0.02 molar glucose is placed in a test tube of water containing 0.02 molar glucose. Assume that glucose is not actively transported into the cell, which terms describes the tonicity of an external solutio..
A can of Mountain Dew soda contains 46 g of sugar. Assume that your body completely digests this sugar, 170 kcal of heat energy is available from the sugar. Around how many grams of water will you have to evaporate as sweat to lose this 170 kcal of e..
Organisms like jellyfish, sponges and flatworms do not have a circulatory system or lungs. What adaptations do these organisms have for oxygen delivery?
Discuss how much of a 10X buffer would I add to a reaction whose total volume will be 20?L?
In most biology experiments the relationship between the independent and the dependent variable can be best described as cause and effect. Describe.
2-dominant mutants in the first linkage group of the guinea pig govern the traits pollex (pX0, which is the ativistic return of thumb and little toe, and rough fur.
At the present we know that over 99 percent of the time, glucose occurs in the closed-ring form. What likely difference between these forms would give chemists a clue that the open-chain form was not present.
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