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In humans, aniridia, a type of blindness, is due to a dominant gene A.  Migraine headaches are due to another dominant gene M, which is on a different chromosome.  A man who suffers from both conditions (AaMm) marries a woman who suffers from both (AaMm). What are the chances of an offspring having neither aniridia or migranes?

Using the table of codons, if the mRNA sequence were CAG, what amino acid would be inserted into the protein?  

If an organism has 8 chromosomes in its somatic cells, at the end of mitosis how many chromosomes would be in each daughter cell?

Ligase enzymes are used to covalently bind together  pieces of DNA during molecular cloning.

The bases bond to the _________ in the backbone of DNA.

What is an anticodon?

The elodea cells in this figure have been placed in a solution where water was lost from the cell and the membrane shrunk away from the cell wall. Compared to the elodea cells, the solution was:

Identify the genetic ratio of the following data:  96 tall, green:  105 tall, yellow: 92 short, green:  98 short, yellow.

What is the role of receptor proteins at the cell membrane?

In a DNA double helix, complementary base pairs are held together by: