The legless condition that is observed in several groups of extant reptiles is the result of 

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#Question id: 5752

#Unit 8. Inheritance Biology

base change that changes a codon for an amino acid to a stop codon

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#Question id: 11167

#Unit 2. Cellular Organization

The core structure of the GPI group consists of :

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#Question id: 4119

#Unit 3. Fundamental Processes

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: 15772

#Unit 5. Developmental Biology

A stem cell capable of producing all the cell types of a lineage is said to be

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#Question id: 23192

#Unit 13. Methods in Biology

The images imaged by conventional point-scanning confocal microscopy and by SIM, SIM improves resolution about