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The wild-type eye color in the fruit fly Drosophila melanogaster is dark red, as a result of a mixture of bright red and brown pigments. Enzyme A is encoded by the a gene and is required to synthesize the bright red pigment. A lack of red pigment results in a somewhat brown eye color. You cross two fruit flies who are heterozygous for a recessive mutation that completely inactivates the a gene. What proportion of their offspring will have a recessive eye color phenotype? a. All of the offspring b. 3/4 c. 1/2 d. 1/4 e. None of the offspring 7. "Dumpy" is a commonly used dominant mutant phenotype in the nematode worm C. elegans. Two dumpy individuals are crossed to each other, and this cross produces 210 dumpy and 68 wild-type individuals. If one of the dumpy individuals used in this cross was mated with a wild type, what dumpy:wild-type ratio would we observe in the offspring? a. 0:1 b. 1:0 c. 1:1 d. 1:3 e. 3:1 8. A recessive X-linked gene mutation is known to generate premature baldness in males but is without effect in women. If a heterozygous female marries an affected male, what proportion of all their children is expected to be prematurely bald? a. 1/4 b. 1/8 c. 1/16

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b) $ \frac{1-\cos ^{2} \theta}{1-\sin ^{2} \theta} $

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What genetic disorder is the result if an individual possesses an XXY chromosome configuration? Group of answer choices Turner Klinefelter Down Fragile X

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Estimate the standard enthalpy of vaporization of ethane from its boiling point, -88.6 °C.

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The ______ of a tissue determines the role that it will have in the body. O age O size O structure O function

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$y = \tan^{-1} \frac{x}{2}$ \newline then the derivative of y is

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Among the impulse-control disorders we discussed, road rage is highly correlated with people who experience intermittent explosive disorder.

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Attempts: 2.3 Keep the Highest: 2.3/3 1. Imports, exports, and the trade balance The following table shows the approximate value of exports and imports for the United States from 1983 through 1987. Complete the table by calculating the surplus or deficit both in absolute (dollar) terms and as a percentage of GDP. If necessary, round your answers to the nearest hundredth. GDP Exports Imports Exports - Imports Year (Billions of dollars) (Billions of dollars) (Billions of dollars) (Billions of dollars) (Percentage of GDP) 1983 3,535.0 277.0 328.6 1984 3,931.0 302.4 405.1 1985 4,218.0 302.0 417.2 1986 4,460.0 320.3 452.9 1987 4,736.0 363.8 508.7 Source: \"Income, Expenditures, Poverty, & Wealth: Gross Domestic Product (GDP),\" United States Census Bureau, United States Department of Commerce, last modified September 2011, accessed June 10, 2013, https://www.census.gov/library/publications/2011/compendia/statab/131ed/income-expenditures- poverty-wealth.html. Between 1985 and 1986, the in dollar terms and as Grade It Now Save & Continue Continue without saving

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Use the Alternating Series Test to determine whether the alternating series converges or diverges.\\ $\sum_{k=1}^{\infty} (-1)^{k+1}\frac{2}{3k^2}$ \\ Identify $a_n$:\\ Evaluate the following limit.\\ $\lim_{n \to \infty} a_n$ \\ Since $\lim_{n \to \infty} a_n$ \textgreater 0 and $a_{n+1}$ ? $a_n$ for all $n$, --Select--

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Problem 2. A car travelling in a straight line at a constant speed of 60\frac{km}{h} reaches a gas station. The driver brakes, so the car slows down, at constant acceleration, to a complete stop. It stays there for a few seconds, then accelerates, at constant acceleration, until it reaches a speed of 90\frac{km}{h}. Draw the general diagram, the motion diagram, the position versus time, the velocity versus time, and the acceleration versus time graphs. In your diagrams and graphs include the whole motion: the car travelling at constant speed; the slowing down; the rest and the acceleration.

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daniel i.