A stem cell capable of producing all the cell types of a lineage(embryonic and extraembryonic) is said to be-

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#Question id: 15620

#SCPH28 | Zoology

Wild type E. coli metabolizes the sugar lactose by expressing the enzyme ß-galactosidase. You have isolated a mutant that you call lac1–, which cannot synthesize ß-galactosidase and cannot grow on lactose (Lac–). During an condition Lac– strain, called lac3–, is linked to the Tn5 insertion. From a strain carrying the Tn5 insertion and lac3– mutation you isolate an F’ that caries a region of the chromosome that includes both Tn5 and the linked Lac region. Introduce this F’ into an F– strain carrying lac1– by selecting for Kanr. These merodiploids express ß-galactosidase normally. What does this result tell you about the relationship between the lac3– and lac1- mutations?  

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#Question id: 19646

#SCPH05 I Biotechnology

Bond length of (I) ethane, (II) ethene, (III) acetylene and (IV) benzene follows the order:

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#Question id: 18887

#SCPH01 Biochemistry

Drumstick appearance in the microscopy is the distinguishing characteristics of:

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#Question id: 7286

#I Life Science/ Life Sciences Group – I-V

Which of the floral whorls is affected in apetala 3/pistillata (ap3/pi) mutants?

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#Question id: 5428

#SCPH28 | Zoology

If trait are governed by polygenic. If plant genotype AABB  ( 8 cm height ) were cross with aabb ( 2 cm height ) produced F1 and allowed to selfing . which of the following phenotypic height are not observe in F2 plant if all gamete participate in fertilization ?