Mitochondrial DNA (mtDNA) is helpful in obtaining a DNA profile for very degraded genetic material because
A) cells have many mitochondria, and therefore several copies of mtDNA sequences.
B) mitochondria contain oxidative enzymes that protect the DNA.
C) mtDNA consists of a single helix, so it cannot be unwound.
D) it uses uracil instead of thymine, which is a more stable nitrogenous base.
A) cells have many mitochondria, and therefore several copies of mtDNA sequences.
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The brain is surrounded by a set of membranes called the
(a) pleural membranes. (b) peritoneum. (c) pericardial membranes. (d) meninges.
Which of the following is NOT true about Kirby-Bauer disk diffusion method?
A. The designation of resistance or sensitivity to a drug is determined by comparing the size of the zone of inhibition to a standard table. B. As the minimum inhibitory concentration value increases, the sensitivity of the organism to the drug decreases. C. The diameters of the zones of inhibition are measured to the nearest millimeter. D. Bacteria used to swab plate a test plate should be at least a week old.
The observation that some modern humans contain Neanderthal DNA suggests _____________________ occurred
between H. sapiens and Neanderthals. Fill in the blank(s) with the appropriate word(s).
Using the central dogma of molecular biology, explain how an organism's genotype influences its phenotype
What will be an ideal response?