Types of genetic markers include
A) places in the genome where a base varies among individuals in a population.
B) places in the genome where all people have identical base sequences.
C) the types of mRNAs in a cell.
D) the proteins produced in a cell.
A) places in the genome where a base varies among individuals in a population.
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Aquatic biomes are defined primarily by ________
A) the animals that live there B) the plants that live there C) their temperature D) their salinity
Prions cause disease by __________.
A. altering normal proteins B. causing transcription and translation of abnormal proteins C. altering genes D. the activity of a reverse transcriptase
You are performing a Gram stain on gram-negative bacteria and you stop after the decolorizer step. What is the appearance of the bacteria at this point?
A) purple B) red C) colorless D) brown
The maternal effect in Lymnaea is such that the genotype of the egg determines the direction of shell coiling regardless of the genotype of the offspring. Apparently, the cause of this spectacular maternal effect results from ________
A) orientation of the spindle apparatus in early cleavage B) allelic substitution as demonstrated from RNA injection experiments C) colicins "poisoning" one of the cleavage centers D) the F factor exerting its influence on the centrosome E) genophores present in the egg cytoplasm