Humans have only ~21,000 genes yet produce ~100,000 proteins. How is this possible?

The term, ____, refers directly to numerical data.

The pedigree above traces the inheritance of sickle cell anemia, a blood disorder caused by a recessive allele (h) of the hemoglobin gene. Affected individuals, indicated by the filled-in circles and squares, produce abnormal hemoglobin, which causes red blood cells to become misshapen.   What is Carla’s genotype?

Which stage of cellular respiration generates the most ATP?

What is the structure labeled #3?  

During translation, there are two tRNAs bound by the ribosome.  Which of the following statements is true?

Mendel’s law of independent assortment says that ___________.

Match the interspecies interaction to its correct description.

Two of the statements below are true.  Choose both true statements.

Which of the following is most likely to cause a population to diverge into two separate species?