While staining a mixed culture of Gram-positive and Gram-negative bacteria, switching the order of steps 2 and 3 would result in ______________________.
a. all bacteria appearing purple
b. all bacteria appearing clear
c. all bacteria appearing pink
d. a change in the Gram reaction; Gram-negative cells would appear purple while Gram-positive cells would appear pink.
Answer: c. all bacteria appearing pink
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Based on comparisons of many human DNA sequences, our level of DNA variation is ____
Fill in the blank with the appropriate word.
The fact that in mammalian systems multiple genes may compensate for the loss of a gene is called gene redundancy
Indicate whether the statement is true or false
________ is the term given to the process by which cells delete genes when the gene products are no longer required, as occurs in mammalian red blood cells.
Fill in the blank(s) with the appropriate word(s).
Having the alleles Tt is
A. a loci. B. linkage. C. a phenotype. D. a gene. E. a genotype.