When & how genetic expression occurs ?

Can you please help with 1a,1b, and 1c please 1a. Find a paper published in a scientific journal between January 2018 and September 2022 that addresses the role of an example of histone modification in affecting expression of a gene by altering histone acetylation/chromatin state of the DNA encoding that gene. What organism and/or cell type did the authors do their study in?  1b. Which histone(s) were affected by the acetylation and/or deacetylation?       What gene did they show had altered expression levels in response to the change in histone acetylation? 1c. what effect did the histone modification they studied have on that gene's level of expression - was expression of the gene they examined increased or decreased?

Gene expression and gene regulation in eukaryotes. Understand how genotype ultimately determines phenotype and why phenotype is important. Know the major biomolecules involved in gene expression, gene regulation and phenotype.

Discuss how the differential gene expression is possible when all somatic cells carry identical genes and genome.

Different cell types, for example a muscle or a blood cell in the same organism retain O only a small fraction of their original set of genes, the ones they will need specifically for functioning, but can regenerate these lost genes as needed. O a complete set of all the same genes, but most of the genes have been permanently altered so that they cannot be transcribed into mRNA transcripts. O a complete set of their genes, and retain the ability to express those genes under certain circumstances into MRNA. O the ability to change their DNA to add regulatory elements that can turn off or on genes.

Proteins that bind to DNA and influence the rate at which particular structural genes will be expressed are calledtranscription factors.autosomes.enhancers.sex-linked traits.mutations.