In a study of tree dispersion in a forest, we divided the forest into 1 sq km grid cells, choose 50 of them at random, and counted the number of trees in each cell. The means to variance ratio of the counts of trees per cell was much less than 1. What does this tell us about the spatial distribution of the trees?

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#Question id: 15742

#Unit 5. Developmental Biology

Which of the following  hormone enables the development of the Müllerian duct into the uterus, oviducts, cervix, and upper portion of the vagina?

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#Question id: 10773

#Unit 8. Inheritance Biology

What is Pseudo dominance?

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#Question id: 23189

#Unit 13. Methods in Biology

Which microscopy is good for live cell imaging?

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#Question id: 19791

#Unit 13. Methods in Biology

Which of the following statements about polymerase chain reaction is correct?

a) PCR denaturation temperature calculated by using Y = X (1+E)n

b) Size of the primer negatively affects the efficiency of PCR

c) Standard PCR doesn’t efficiently amplify sequence much longer than about 5kb.

d) Primer annealing of PCR at 550C for 1.5 min.

e) Time taken for each cycle of PCR considerably longer than 3 min.

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#Question id: 1041

#Unit 4. Cell Communication and Cell Signaling

The lactobacilli, in their role as normal flora of the vagina, help the vagina resist infection by contributing to