Given what you know of the inheritance pattern of SCD, what can be said of individual II-5?
A) He is a carrier because his mother was affected and his son was affected.
B) His children with II-4 will have a 50% chance of being carriers (?A?S).
C) His children with II-4 will all have a 50% chance of being affected (?S?S).
D) A and B are correct.
E) A, B, and C are correct.
E
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Answer the question using the accompanying figure. At which point in this action potential diagram are Na+ inactivation
gates opening?
a. A b. B c. C d. D e. E
Different viruses have different properties that affect how the immune system responds to them and consequently how vaccines must be developed.What is a consequence of the fact that the chickenpox virus has a much lower mutation rate than the influenza virus?
A. Chickenpox virus can reemerge decades later with the symptoms of shingles, while influenza is transient. B. A chickenpox infection generally gives immunity against a repeat infection, but people can catch the flu every year. C. Chickenpox virus can "hide out" as latent virus in nerve cell bodies, but influenza cannot. D. Chickenpox creates skin lesions, while influenza leads to body aches.
Regarding the structure of DNA, which of the following is like a spiral staircase?
A) Hydrogen bonds B) Phosphate C) Deoxyribose D) Double helix E) Covalent bonds
What would be logical to conclude about a country with a population pyramid having a disproportionately large number of individuals in the 15—44 year old range?
A) The country will exhibit large population growth. B) The country will exhibit zero population growth. C) The country is a developed country. D) The country will exhibit little population growth.