Biologists examining the plant gene LEAFY's effect on expression patterns of genes overexpressed and underexpressed LEAFY.They then performed microarray analysis to examine the effects of changes of LEAFY expression on the expression of other genes in the genome.Refer to the table showing the results for four different genes with LEAFY underexpressed and overexpressed, and the control.The expression levels are normalized such that they are 100 for each gene in control conditions. Which gene(s) is/are most likely inhibited by LEAFY?
A) Gene 894 only
B) Gene 1567 only
C) Gene 3407 only
D) Both genes 3407 and 4419
E) There is insufficient information to answer this question.

Question

Biologists examining the plant gene LEAFY's effect on expression patterns of genes overexpressed and underexpressed LEAFY.They then performed microarray analysis to examine the effects of changes of LEAFY expression on the expression of other genes in the genome.Refer to the table showing the results for four different genes with LEAFY underexpressed and overexpressed, and the control.The expression levels are normalized such that they are 100 for each gene in control conditions.  Which gene(s) is/are most likely inhibited by LEAFY?
A) Gene 894 only 
B) Gene 1567 only 
C) Gene 3407 only 
D) Both genes 3407 and 4419 
E) There is insufficient information to answer this question.

Quizplus · Accepted Answer

Gene 3407 is the only gene that shows a significant decrease in expression when LEAFY is overexpressed, suggesting that it is being inhibited by LEAFY. The other three genes show increased expression when LEAFY is overexpressed, indicating that they may be positively regulated by LEAFY. Therefore, choice C is the best answer.

Biologists Examining the Plant Gene LEAFY's Effect on Expression Patterns