A team of conservation biologists, surveying a population of frogs on an island, captured and marked 312 individuals in the first sample. In a second sampling, 3 days later, the team caught 140 individuals of which 26 were previously marked. The total number of frogs on the island is estimated to be . (Use decimal notation, not fractions or percentage)

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#Question id: 4559

#Unit 3. Fundamental Processes

The 5’Cap is added to the eukaryotic nascent RNAs shortly after

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#Question id: 7262

#Unit 5. Developmental Biology

Match the following Gene (column I) with their function (column II).

   

Column I	Column II
A. sex-lethal	i. facilitates transcription from the X chromosome
B. double-sex	ii. help  to generate the female phenotype by splicing the doublesex gene
C. msl	iii. encodes an RNA splicing factor
D. transformer	iv. activate wingless gene in female

 

Which of the following is correct?

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#Question id: 24206

#Unit 4. Cell Communication and Cell Signaling

The adhesiveness of cadherins depends on the presence of

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#Question id: 5006

#Unit 11. Evolution and Behavior

The oxygen revolution changed Earthʹs environment dramatically. Which of the following adaptations took advantage of the presence of free oxygen in the oceans and atmosphere?

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#Question id: 20989

#Unit 12. Applied Biology

_______ conversion of toluene to benzoic acid in the zone of a crude oil-contaminated aquifer was obtained.