What is an allele? A. A group of chromosomes
B. A gene that causes a specific trait
C. An organism that lives in Eukaryotes
D. A chromosome that determines gender

answer; i believe the correct answer is ( proteins );

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg 

her next move would be to use agarose gel electrophoresis to separate the dna molecules of varying length and create a dna fingerprint.