A DNA barcode system uses a nuclear gene that varies greatly between species
a. True
b. False
ANSWER: False
You might also like to view...
Select the following statements that are related to mass extinctions.
A. The most severe mass extinction occurred at the end of the Cretaceous period. B. Periods of mass extinctions have occurred five times over the history of life on Earth. C. The current level of species diversity is so high it is highly unlikely that another mass extinction could occur. D. A mass extinction occurs when extinctions sharply outpace the formation of new species. E. During periods of mass extinction, dominant groups of organisms are protected and survive to repopulate.
Sequence-tagged sites (STS) are used to assemble DNA maps from a given species. STSs are useful in this regard because
A. they generate DNA fragments of a reasonable size for mapping. B. they are only found in genes, not in noncoding DNA. C. each STS is found many times within the genome. D. they provide a way to order DNA fragments.
Without your glasses, the world is a blur, but you’ve discovered that if you squint your eyes, you can see well enough to read, at least for a few minutes. What condition do you suffer from?
a. presbyopia b. hyperopia c. myopia d. astigmatism
Which is the chemical bond formed when an electron is shared between two elements?
a. Ionic bond b. Covalent bond c. Electronic bond d. Hydrogen bond