Altruism is favoured when rb - c > 0 where c is fitness cost to altruist, b is fitness benefit to recipient; and r is genetic relatedness. It is under negative selection when

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#Question id: 31051

#Unit 4. Cell Communication and Cell Signaling

Which of the following EGF family Receptors do not undergo ligand-induced internalization?

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#Question id: 12736

#Unit 13. Methods in Biology

Match the following:

1. Emphysema                                                    i.  Fibroblasts

2. Immune System Disorder                        ii.  HPRT cLesch-Nyhan syndrome                           iv. T and B cells

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#Question id: 10280

#Unit 6. System Physiology – Plant

The enzyme of glycolytic pathway that forms fructose 1,6-bisphosphate is called phosphofructokinase-1 (PFK-1), which statements can’t distinguish it from a second enzyme (PFK-2) Phosphofructokinase-2.

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#Question id: 15617

#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 you have a wild type (Lac+) strain carrying a Tn5 insertion known to be near several Lac genes on the E. coli chromosome. You grow P1 phage on this strain and use the resulting phage lysate to infect the lac1– strain, selecting for kanamycin resistance (Kanr). Among 100 Kanr transductants, you find that 82 are Lac– and 18 are Lac+. Express the distance between Tn5 and the lac1– mutation as a cotransduction frequency;

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#Question id: 2028

#Unit 4. Cell Communication and Cell Signaling

Three distinct antigen X, Y and Z were use to raise antibody. Which one of them statements regarding antibody titers in serum is Incorrect?