A particular gene has a mutation in its nucleosomefree regi

____ A particular gene has a mutation in its nucleosome-free region (NFR) that causes it to bind abnormally tightly to histones. What effect would you expect this mutation has on the expression of this gene? The expression of the gene would be abnormally high. The effect on gene expression Is impossible to predict. The gene would encode a different protein instead. The expression of the gene would be abnormally low or absent. The promoter of the gene will be constantly available to transcription factors and RNA polymerase. ____ Which of the following is part of the process of X chromosome inactivation? Expression of Xist from both chromosomes at the start of the process Binding of multiple Exist transcripts to Xic on the X chromosome that will be inactivated Compaction of the active X chromosome into a Barr body Binding of Tsix transcripts to the X chromosome to be inactivated after the Exist transcripts binds to Xic ___ What is the molecular mechanism for imprinting a gene? A

Solution

1 B) The effect on gene expression is impossible to predict.

2 B) Binding of the multiple Xist transcripts to Xic on the X chromosome that will be inactivated...

3 D)Methylation

4 D) All are correct