The basic tool of genetic regulation is the ability of certain proteins to bind to specific
A. promoter parts of the gene.
B. repressor parts of the gene.
C. regulatory DNA sequences.
D. regulatory RNA sequences.
E. enzymes of the cell.
Answer: C
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Indicate the order of the point mutations in the rII region.
Shown below are the maps of a series of rII- deletion strains (1–5). The deleted region is indicated as (......) and the intact region as ______.
1 ___________(...........)_______________
2 _________________(...........)_________
3 (.....................)_____________________
4 ________________________(................)
5 _____(..........)______________________
rII- phage strains A-E have point mutations in the rII region. E.coli K(?) cells are coinfected with one phage that has a deletion and one phage that has a point mutation. The presence of wild-type progeny phage is assessed by the presence (+) or absence (o) of plaques.
A) CADBE
B) DEBAC
C) BADCE
D) ABDEC
E) CEADB
Which example does not include a case of phenotypic variance?
A. A population of finches has their bill size increased by directional selection B. A population of humans in which individuals differ in height C. A population of bacteria is polymorphic for a single nucleotide polymorphism that resulted from a synonymous mutation D. A genetically uniform population of barnacles express more muscular reproductive organs in wavy environments E. A population of garter snakes with several color patterns use different escape behaviors
During photosynthesis, plants use light energy to synthesize glucose from carbon dioxide. However, plants do not use up energy during photosynthesis; they merely convert it from light energy to chemical energy. This is an illustration of:
A) spontaneous reaction. B) the first law of thermodynamics. C) increasing entropy. D) chemical equilibrium. E) the second law of thermodynamics.
Which of the following is mismatched to its location in the skin?
A. keratinization-epidermis B. hair follicles-dermis C. sense organs-dermis D. nerves/blood vessels-epidermis E. fat-subcutaneous layer