Nitrogen has an atomic number (number of protons) of 7.  How many electrons does the element nitrogen (N) have in its valence (outer) shell when it is not combined with another element?

Which results in glucose production?

What are restriction endonucleases?

When a yeast cell has oxygen, it completes ____________. When it has no oxygen, it completes _______________.

The diagram represents the process of PCR.  PCR is an abbreviation for __________.

This Punnet square correctly shows a cross between Hh x Hh.   The phenotypic ratio from this cross is:

In cats, the genes for coat color are X- linked on separate chromosomes.  Black is due to gene B and orange is due to its codominant allele, gene 0.  The heterozygous condition of XB X0 results in a calico cat. An orange male is mated with a calico female.  What percent of the offspring will be black males?

The sugar in the nucleotide that helps form DNA.

In guinea pigs, black fur (B) is dominant to brown (b) and short fur (S) is dominant to long (s). A heterozygous black, short-furred guinea pig (BbSs) males with a brown long-furred guinea pig.  The expected results are:  

In the double helix model of DNA, the backbone of the twisted “ladder” are composed of phosphodiester bonds between: