A genetic experiment with peas resulted in one sample of offspring that consisted of 409 green peas and 159 yellow peas.a. Construct a 90% confidence interval to estimate of the percentage of yellow peas.b. It was expected that? 25% of the offspring peas would be yellow. Given that the percentage of offspring yellow peas is not? 25%, do the results contradict? expectations?

One way to discover promoters is through an experiment called RNA polymerase protection assay, in which RNA polymerase binds to a gene, is cross-linked to the DNA, and then the DNA is subjected to fragmentation, which breaks apart any DNA that is not protected by cross-linked protein. Explain why this would help to identify promoters in genes.

The authors state that M. cardinalis evolved “from an insect-pollinated ancestor likely to have resembled the extant M. lewisii.” Given this statement, briefly describe what this experiment tells us about the impacts of this allele on prezygotic reproductive isolation between these two species of wildflower. (Just a few sentences, nothing fancy!)

The electrophoretic mobility shift assay (EMSA) experiment demonstrated the very powerful technique for determining protein-DNA interactions. For this purpose the EMSA can be used qualitatively to

a. identify unknown DNA molecules.

b. detect DNA - RNA interactions.

c. identify specific transcriptional or co-transcriptional factors.

d. identify isoenzymes.

78. Different states and counties are in the process of relaxing non-pharmaceutical interventions (i.e. social distancing) for the COVID-19 response. Please explain how you would setup a natural experiment to measure the effectiveness of different non-pharmaceutical interventions. Please write a hypothesis and how you would test the hypothesis. explain briefly

2. Propose a simple laboratory study to investigate the ability of coral populations to ‘respond to environmental change’ items 4 & 5 (phenotypic plasticity & adaptive evolution).

As a follow up to your experiment, imagine that you are collaborating with a marine invertebrate geneticist. What would you ask them to investigate with respect to coral genomes?

4. The experiment is to draw a card from a standard deck of cards. Consider the following events: Q = drawing a Queen R = drawing a red card

a. Are Q and R mutually exclusive? Clearly explain.

b. Find P(Q) and P(Q|R).

c. Are the events Q and R independent? Clearly explain.

In the experiment, you are striving to determine the answer both accurately and precisely. Which of the following types of glassware can record the volume to two decimal places ( that is, are precise to 0.01 mL)

a. beaker

b. erlenmeyer flask

c. buret

d. mohr pipet

e. dropper

f. volumeric pipet

g. volumeric flask

A 15.44 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 21.89 grams of CO₂ and 13.44 grams of H₂O are produced.

In a separate experiment, the molar mass is found to be 62.07 g/mol. Determine the empirical formula and the molecular formula of the organic compound.

Empirical Formula?

Molecular Formula?

Suppose we are interested in the impact of political campaigns (phone calls, mailings, and visits by campaign workers) on support for candidates. a) What are some potential limitations of analyzing this question using observational data? b) How should we create an experiment to assess whether these campaign activities matter? What might some of the challenges be?