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TLS Online TPP Program
#Question id: 28268
#Unit 5. Developmental Biology
Resact from Arbacia egg jelly binds to its receptor on the sperm, which activates the receptor is___
TLS Online TPP Program
#Question id: 14839
#Unit 5. Developmental Biology
Given are certain facts which define ‘specification’ of a developing embryo.
A. At the specification stage, commitment to cell identity is labile.
B. At the specification stage, cell is capable of differentiating autonomously.
C. The cell “knows” very early what it is to become without interacting with other cells.
D. A phase where inductive signals trigger cell to determines their fate.
Which of the above statements best define specification?
TLS Online TPP Program
#Question id: 630
#Unit 1. Molecules and their Interaction Relevant to Biology
In case of competitive inhibition, plots of Km against [Io] fixed [Eo] have
TLS Online TPP Program
#Question id: 15620
#Unit 13. Methods in Biology
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?
TLS Online TPP Program
#Question id: 19995
#Unit 2. Cellular Organization
Drosophila melanogaster also shows C-Value paradox in terms of their number of genes. If Drosophila have total 1 x 108 base pairs and average size of one gene is 2000 bp then mathematically gene capacity of Drosophila is