A 20-year-old woman is not having menstrual cycles. Her plasma progesterone concentration is found to be minimal. What is the explanation for the low level of progesterone?

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#Question id: 15990

#Unit 12. Applied Biology

 Several given biological method involve in the plant transformation, except?

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#Question id: 31245

#Unit 5. Developmental Biology

Human polysyndactyly syndrome is caused by:

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#Question id: 28300

#Unit 5. Developmental Biology

Translocation of sperm from the vagina to the oviduct involves several processes except;

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#Question id: 11361

#Unit 10. Ecological Principles

Which of the following tends to stabilize predator-prey relationships?

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#Question id: 18858

#Unit 13. Methods in Biology

Where in the genome are loxP sites located in a Cre/Lox model?