The narrow-sense heritability of ear length in Reno rabbits is 0.4. The phenotypic variance (VP) is 0.8, and the environmental variance (VE) is 0.2. What is the additive genetic variance (VA) for ear length in these rabbits?

#Question id: 10931

#Unit 7. System Physiology – Animal

A 24-year-old African-American man comes to the emergency room 3 hr after the onset of severe back and chest pain. These problems started while he was skiing. He lives in Los Angeles and had a previous episode of these symptoms 5 years ago while visiting Wyoming. He is in obvious pain. Laboratory studies show the following:

Hemoglobin                                        11 gm/dl

Leukocyte count                                 22,000/μl3

Reticulocyte count                              25%

What is the diagnosis of this patient?

#Question id: 12008

#Unit 10. Ecological Principles

#Question id: 672

#Unit 1. Molecules and their Interaction Relevant to Biology

An ideal α-helix has a pitch of 0.54 nm and a rise of 0.15 nm. What is the length along the helix axis for a segment of an ideal α-helix that contains 30 amino acids?

#Question id: 10452

#Unit 6. System Physiology – Plant

Phototropin has two LOV domains and a kinase domain, separated by an α-helical region (Jα). In the absence of light, which one of the following is correct prediction?

#Question id: 14882

#Unit 4. Cell Communication and Cell Signaling