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While doing field work in Madagascar, you discovered a newdragonfly species that has either red (R) or clear (r) wings, withgreen (G) or grey (g) eyes. Initial crosses indicate that R isdominant over the r allele, while G is dominant over g allele. Youperform the first cross and all the […]

Diana is a 37-year-old mother of 2 children. She used to exercise fairly consistently (mostly jogging and light aerobic activities) before having kids. Ever since she had her first child 9 years ago, she has not been very active. Diana has her 20-year high school reunion coming up in 3 […]

One of the most puzzling questions in biology is how multi-cellularity arose. Explain the conditions under which having a body with more than one cell would have been adaptive. What kinds of problems do having larger and/or more cells present to an organism? What are some strategies used by these […]

Q1. A person has MG what would be the expected effect on calcium levels near contractile proteins, following the arrival of an electrical impulse at those neuromuscular junctions? Q2. Some of enzymes that oxidize sugars to yield useable cellular energy (for example, ATP) are regulated by phosphorylation. For these enzymes, […]