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What type of cross is used to determine if an individual with the dominant form of a trait is homozygous or heterozygous by crossing with a homozygous recessive individual?

A somatic cell from a corn plant normally contains 20 chromosomes.  How many sister chromatids would that cell have at the beginning of mitosis?

In anaphase I, the _________ separate from one another and begin moving to opposite poles.

 If a cell normally has 32 chromosomes, how many chromosomes will each new daughter cell have after mitosis and cytokinesis?

Animal cells typically achieve cytokinesis by forming a ________ that pinches the cell into two, while plant cells typically achieve cytokinesis by forming a ________ across the middle of the cell.

What was the ratio of dominant to recessive phenotypes that Mendel observed for all traits in the F2 generation (aka the Mendelian ratio)?

A/An _______________________ is a type of leukocyte that surrounds and kills invading cells. This type of cell also removes dead cells and stimulates the action of other immune cells.

Any of a large group of diseases characterized by a condition in which the immune system produces antibodies against its own tissues is known as a/an _______________ disorder. 

An antigen is any substance that the body regards as being foreign.

The medical term for the condition commonly known as shingles is _______.