<h2>(C) option is correct</h2>
Explanation:
Since the gene encodes a histone acetyl transferase, it resists heterochromatin expansion by acetylating its own histones,this is the scenario which is not going to happen
- In eukaryotic transcription initiation of a gene require change in chromatin structure(chromatin remodeling) because promoter and other regulatory elements of DNA exposed after removal of histone core
- Chromatin remodeling can be induced by two separate mechanisms: Histone modification and histone displacement
- By histone modification-it is an enzyme dependent but energy independent;includes acetylation,methylation and phosphorylation
- Histone acetylation occurs on Lysine residue of H3 and H4 which is present in histone tail
- Histone acetylation catalysed by an enzyme called as histone acetyl transferase(HAT)
- Histone acetylation neutralises the positive charge of histone core and facilitate their dissociation
- Histone acetylation favours gene expression
- Histone deacetylation is the removal of acetyl group from histone tail which is catalysed by histone deacetylated enzyme and is always associated with gene repression
Soil bacteria is not responsible for Assimilation.
The main functions of Soil bacterias is Nitrogen fixation.
Explanation:
if the organism has 5 of these characteristics, it belongs in the category of animalia...
1). pulmonary function
2). DNA
3). RNA
4). proteins
5). lipids
D. only in the nucleus. DNA or (deoxyribonucleic acid) is what makes you... YOU! All of your traits (Hair color, Eye color, The shape of your ears, Cancer risk, SKIN COLOR, etc.) But DNA is only housed in the nucleus of the cell, so the nucleus is the only place the transcription of the melanin gene could take place.