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During week 3, the cardiac tube is organized into regions that develop into structures of the heart. What is the initial heart rate of the cardiac tube in BPM? 

Increased blood flow to the left atrium (LA) causes LA pressure to increase, which forces the foramen ovale to .  

What are the normal ranges for heart rate (BPM) and respiration (RPM) for an infant (1–12 mos)? 

By which week of development is the fetal heart completely formed?

Aggregate Supply/Demand analysis For the following scenario, assume prices and wages are fully flexible. Scenario: Household wealth declines sharply after a major stock market crash. What is the effect on the price level and real output?

Aggregate Supply/Demand Analysis For the following scenario, assume prices and wages are fully flexible. Scenario: The government increases spending significantly to stimulate the economy. At the same time, global commodity prices rise, increasing production costs. What is the effect on the price level and real output?

In our correlation analysis of the Producer Price Index (PPI) and Oil prices, we calculated our regression function to be: Y = 0.1177x + 1.4541, where Y = the % Change in PPI and X = % Change in Oil Prices.  If oil prices decreased 30%, what by what percent would you forecast the PPI to change? Enter your answer rounded to the nearest hundredth with no % symbol, e.g. 6.837%  = 6.84 

An economy has: Labor force = 160 million Employed = 150 million a) Calculate the unemployment rate.  b) If 2 million discouraged workers stop looking for work, what happens to the unemployment rate? Explain.

In a study of flower color in a population of true-breeding red-flowered and white-flowered plants, the red color is dominant, and white is recessive. Crossing true-breeding red-flowered plants with true-breeding white-flowered plants results in an F1 generation where 100% of the offspring have red flowers. The F1 plants are self-fertilized to produce an F2 generation. In a randomly selected set of 100 flowers from the F2 generation, you observe 75 red-flowered plants and 25 white-flowered plants. What is the observed frequency of the dominant allele in this F2 population? Select the right answer and show your work on your scratch paper for credit.

Coat color in mice is controlled by the interaction of two genes: Gene #1: The black coat color allele (B) is dominant over the brown coat color allele (b). Gene #2: Expression of coat color allele (C) is dominant over masking of coat color allele (c). Genotypes CC and Cc enable the expression of coat color, and the genotype cc will mask the expression of coat color, resulting in a white mouse.  What is the expected phenotypic ratio (Black: Brown: White) that results from a cross between two black mice heterozygous for both genes?  Select the right answer and show your work on your scratch paper for credit.