#Question id: 3647
#SCPH05 I Biotechnology
In the cell cycle: there are four main phases, G1, S, G2 and M phase. S phase is the :
#Question id: 11450
#I Life Science/ Life Sciences Group – I-V
The conversion of a stimulus into an action potential by a receptor cell is called ________.
#Question id: 3632
#SCPH28 | Zoology
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: 364
#SCPH28 | Zoology
A solution contains 0.0000001 (10-7) moles of hydrogen ions [H+] per liter. Which of the following best describes this solution?
#Question id: 3268
#SCPH06 I Botany
A population of insects is in Hardy-Weinberg equilibrium for a gene with alleles A = orange and a = yellow eyes. There are 91% orange and 9% yellow individuals in the population. If the fitness of the yellow phenotype suddenly drops to zero, what will be the allele frequency in the next generation?