#Question id: 53
#I Life Science/ Life Sciences Group – I-V
Calculate the number of times the DNA of a modern E. coli cell has been copied accurately since its earliest bacterial precursor cell arose about 3.5 billion years ago. Assume for simplicity that over this time period, E. coli has undergone, on average, one cell division every 12 hours (this is an overestimate for modern bacteria, but probably an underestimate for ancient bacteria).
#Question id: 1104
#SCPH01 Biochemistry
Which of the following statements is true of signal molecules?
#Question id: 4746
#SCPH01 Biochemistry
Two independent pure line varieties having deep red and brown phenotype in their seed coat were cross, the all f1 progeny is deep red. The F2 progeny obtain from selfing show deep red and brown in ratio of 15:1. Which of the following observation is correct?
#Question id: 1276
#SCPH28 | Zoology
Which of the following does not belong to the major families of cell surface adhesion molecules?
#Question id: 3027
#I Life Science/ Life Sciences Group – I-V
Which of the following contains a copy of the chromosome, along with a small amount of dehydrated cytoplasm, within a tough wall?