On average, humans differ by _____________________% of their genomic sequences. Fill in the blank(s) with the appropriate word(s)

Microbiota of the skin are most likely to be found

A. in association with oil and sweat glands. B. where there is little moisture. C. where the pH of the skin secretions is below 4. D. All of the choices are correct.

How many different codons in our genetic code specify amino acids?

a. 3 b. 20 c. 60 d. 61 e. 64

When erythrocytes are old or die, how are they removed from the blood stream?

a. the liver filters them out b. they break up into small particles and are cleared out by the kidneys. c. they dissolve into liquid and circulate in that form in the blood d. they are attacked by macrophages and removed e. they stay as intact dead cells and are filtered out by the kidneys

In DNA profiles, the pattern of bands is _____

a. due to variations in restriction enzyme recognition sites in plasmid DNA b. identical in all individuals c. due to variations in STR alleles between individuals d. due to the presence of transgenes e. possible only when copious quantities of DNA are available