When creating a molecular clock, investigators often use mitochondrial DNA (mtDNA) because it mutates much more quickly than nuclear DNA.
Answer the following statement true (T) or false (F)
True
This is a true statement. Mitochondrial DNA (mtDNA) mutates ten times faster than nuclear DNA. Therefore, when determining the phylogeny of closely related species, investigators often choose to sequence mtDNA instead of nuclear DNA.
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Crown corrosion of concrete wastewater distribution systems is the result of
A) acidic fermentation products reacting with the gypsum in the concrete. B) sulfate reduction in the sewage and sulfide oxidation in the oxic headspace above. C) fungal growth in the concrete. D) rapid iron reduction coupled to pyrite dissolution.
Which of the following is NOT a characteristic of seeds?
A. They contain endosperm. B. They have an embryo. C. They may differ in amount of water content. D. They usually vary in size. E. They usually have about the same amount of water.
If a population speciates in the absence of a
physical barrier it is known as
a. sympatric speciation. b. disruptive selection. c. directional selection. d. hybrid sterility. e. allopatric speciation
took just __________ year(s) to deforest an area
the size of Delaware in Maine. a. 1 b. 4 c. 10 d. 15 e. 20