Hamilton explained the origin of altruism in selected insect societies with his kin selection model of sex determination. Since males are haploid and females are diploid, the workers share a very high proportion of alleles, theoretically as high as 75%. What is this called?
A. haplodiploidy
B. altruism
C. haploidy
D. diploidy
E. parthenogenesis
Answer: A
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During DNA replication in E. coli, what is the role of DnaA?
A) DnaA is a region of DNA recognized by the replisome where replication is initiated. B) DnaA bends DNA, hydrolyzing the hydrogen bonds in the 13-mer region of oriC and creating an open complex. C) DnaA is a helicase that uses ATP to hydrolyze hydrogen bonds and separate DNA strands. D) DnaA carries the helicase protein to the open region of DNA where hydrolysis and strand separation will occur. E) DnaA prevents reannealing of the separated strands so replication can proceed.
All of the following pertain to hypochlorites, except
A. they are used to disinfect dairy, restaurant, and medical equipment. B. they are found in iodophors. C. they cause denaturation of enzymes. D. they release hypochlorous acid in solution. E. they are found in common household bleach.
Viruses are used to produce vaccines for prevention of certain viral infections.
Answer the following statement true (T) or false (F)
Some aquatic invertebrates, such as lobsters and crabs, have ____, which are filamentous or platelike respiratory organs that increase the surface area available for gas exchange with water.
A. book lungs B. a tracheal system C. gills D. a siphon E. villi