Diversity is often ________ when ARISA or T-RFLP is used

A) underestimated
B) overestimated
C) not represented
D) biased


Answer: A

Biology & Microbiology

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Which of the following statistical tests is used to determine if two genes are linked or assorting independently?

A. Sum rule B. Binomial expansion C. Product rule D. Chi-square test

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What is periderm?

a. special epidermal cells that regulate gas exchange b. outer layer of the vascular cylinder in a plant root c. layers of cells just inside root endodermis d. dermal tissue that replaces epidermis on the surfaces of older stems and roots

e. tissue that consists of densely packed dead cells with thickened, waxy walls

Biology & Microbiology

_____ are the main male hormones.

Fill in the blank(s) with the appropriate word(s).

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Amniocentesis and chorionic villus sampling are two methods of prenatal diagnosis. One important

difference between these techniques is that A. chorionic villus sampling is more routinely prescribed. B. amniocentesis can diagnose chromosome disorders, while chorionic villus sampling cannot. C. chorionic villus sampling can be performed earlier than amniocentesis. D. maternal risks are higher with chorionic villus sampling. E. the risk of miscarriage is higher with amniocentesis than with chorionic villus sampling.

Biology & Microbiology