In the ONPG and MUG test for fecal coliforms, a sample that is positive for E. coli will be
A) positive for ONPG; fluorescent in UV light.
B) negative for ONPG; fluorescent in UV light.
C) positive for ONPG; non-fluorescent in UV light.
D) negative for ONPG; non-fluorescent in UV light.
A
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Inbreeding increases the likelyhood that an individual will become homozygous for any given gene. Inbreeding may have negative consequences with regard to recessive alleles. The diagram above shows inbreeding between _________ which could lower the fitness of the homozygote. This lowering of fitness because of inbreeding is called __________.
A. siblings; inbreeding depression.
B. cousins; inbreeding depression.
C. siblings; puma concolor cory.
D. cousins; genetic drift.
E. siblings; sexual selection.
In the shallow subsurface, surface waters often move through ________, which are porous geological structures below the plant root zone.
Fill in the blank(s) with the appropriate word(s).
Telomerases are important in the replication of linear chromosomes because there is no ________ at the ends of the lagging strands.
Fill in the blank(s) with the appropriate word(s).
Predict why a box jelly can eat fish while a sponge can only consume bacteria and other microscopic organic matter?
A. Box jellies use intracellular digestion. B. Sponges are too small to consume large prey items. C. Sponges lack venom in their stinging cells. D. Box jellies start digestion in their gastrovascular cavity.