In one individual euchromatic genes are artificially transposed to a heterochromatic environment,resulting in a mixture of normal and mutant characteristics.This is called
A) position-effect variegation.
B) gene amplification.
C) gene-dosage compensation.
D) inactivation of whole chromosomes.
E) signal transduction.

Question

Quizplus · Accepted Answer

Position-effect variegation refers to the phenomenon in which genes that are moved from a euchromatic environment to a heterochromatic environment can result in a variegated phenotype due to the variable expression of the gene depending on its position in the chromatin. This can result in a mixture of normal and mutant characteristics. Gene amplification refers to the process of increasing the copy number of a particular gene. Gene dosage compensation refers to the process by which organisms balance the expression of genes from sex chromosomes that differ in number between males and females. Inactivation of whole chromosomes refers to the process by which one of the two X chromosomes in female mammals is inactivated as a way of equalizing gene expression with males who only have one X chromosome. Signal transduction refers to the process by which cells communicate with one another through the transmission of signals.

In One Individual Euchromatic Genes Are Artificially Transposed to a Heterochromatic