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**EXTRA CREDIT:  1 point Extra Credit to achieved score if answered correctly:  (scores adjusted upon review post submission)   The nurse explains to a group of students that the upper, rounded portion of the stomach is the __________________

Substances that influence reactions in the lymph and immune systems are:  

How many cell divisions take place during one round of mitosis?

The presence of an antibiotic acts as a selective pressure, favoring the survival of resistant strains.

How many daughter cells are produced by a single parent cell in meiosis?

Dr. Cynthia Kenyon used mutation breeding on Caenorhabditis elegans that resulted in strains that:

Crossing over results in a chromosome with a mix of genetic material from both parents.

During ______________ the dyads of homologous chromosomes wrap around each other forming a tetrad.

The New Mexico whiptail lizard has a unique feature. The entire species is:

Why did the sexual minnows in Dr. Vrijenhoek’s study (pre-drought) have lower parasite load?