The nurse is identifying risk factors for liver disease among individuals who visit the community health center. Which does the nurse recognize as a factor contributing to increased risk among certain ethnic groups?

Average human birth weight is ~3 kg. Explain why this is an example of stabilizing selection, and predict what might happen if environmental pressures shifted.

In Darwin’s framework, closely related organisms share a recent common ancestor. Provide an example of how molecular data supports this claim, and evaluate its reliability compared to morphological evidence.  

A recessive trait remains at 25% frequency in a lab population over generations.   a) Analyze what this suggests about fitness and Hardy-Weinberg equilibrium. b) Using Hardy-Weinberg principles, calculate the frequency of allele A in the population described above. Explain your reasoning. c) Estimate the proportion of heterozygotes (Aa) in the same population. Discuss why heterozygosity matters for evolutionary potential.

During a storm, a mating pair of finches was blown 600 miles off the coast of Ecuador to a group of volcanic islands (we’ll call them the Galapagos).  This pair of birds will reproduce and their offspring eventually become a different species from those in Ecuador.    a) What type of speciation is this, and why would it occur?   b) The new population is less genetically diverse than the original.  What is this called? 

Describe how exon shuffling occurs and analyze its evolutionary significance. How might this process generate novel protein functions across lineages?

Island organisms often differ from mainland relatives. Explain how this supports Darwin’s theory of descent with modification, and propose a modern genomic approach to test this.  

All organisms use essentially the same genetic code. Discuss why this is strong evidence for the common origin of life, and evaluate alternative explanations.

A client with liver cirrhosis begins to vomit red blood. Which intervention(s) should the nurse anticipate being ordered by the provider to help attain hemostasis for this client? Select all that apply.

Unit 3B Test (MOM item) Password: