Many eukaryotic genes contain a large number of exons. Correct splicing of such genes requires that neighboring exons be ligated to one another; if they are not, exons will be left out. One early proposal suggested that the splicing machinery bound to a splice site at one end of an intron and scanned through the intron to find the splice site at the other end. Such a scanning mechanism would guarantee that an exon was never skipped. This hypothesis was tested with one minigene with a duplicated 5ʹ splice site. Find diagram of the products you expect from minigene if the splicing machinery binds to a 5ʹ splice site and scans toward a 3ʹ splice site.

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#Question id: 10574

#Unit 10. Ecological Principles

Which of the following statements about the evolution of life histories is correct?

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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: 32213

#Unit 1. Molecules and their Interaction Relevant to Biology

Identify the structure shown

 

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#Question id: 5570

#Unit 5. Developmental Biology

Sexual reproduction ________.

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#Question id: 23841

#Unit 2. Cellular Organization

Which step of myosin movement along the actin filament is performed in the absence of ATP?