One species mates at the season when daylight is increasing from 13 hours to 13 hours, 15 minutes; another species mates at the season when daylight is increasing from 14 hours to 14 hours, 15 minutes. The isolating mechanism is

#Question id: 3685

#SCPH05 I Biotechnology

In prokaryotes, DNA replication begins at a single site that is rich in AT nucleotide sequence, where two strands unwind and separate. This ATP dependent process catalyzed by a protein

#Question id: 2999

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

Agar is superior to gelatin as a solidifying agent because agar

#Question id: 3632

#SCPH06 I Botany

geneticist is working with a new bacteriophage called phage Y3 that infects E. coli. He has isolated eight mutant phages that fail to produce plaques when grown on E. coli strain K. To determine whether these mutations occur at the same functional gene, he simultaneously infects E. coli K cells with paired combinations of the mutants and looks to see whether plaques are formed. He obtains the following results. (A plussign means that plaques were formed on E. coli K; a minussign means that no plaques were formed on E. coli K.)

How many cistron belong to these mutation?

#Question id: 8947

#SCPH28 | Zoology

#Question id: 10940

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

Adhesion of white blood cells to the endothelium is