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Other quiz:

Reproduction › View

Why do progesterone levels decrease if an egg is not fertilised?

A. So that the uterus lining breaks down

B. So that the egg can be implanted

C. So that the sperm will die

D. So that the woman can become pregnant

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HHB Immunology › View

group of genetically identical lymphocytes produced from one parent cell that bound to an antigen 

A. clonal population 

B. inflammatory response 

C. lymphocyte 

D. membrane receptor 

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