Answer:
Option (A) and (C).
Explanation:
Gene regulatory mechanism are important for the regulation of the transcription and proper expression of genes. Different regulatory mechanisms are present in prokaryotes and eukaryotes.
The prokaryotes do not require the multiple general transcription factors where as the eukaryotes have different transcription factors like TFIID, TFIIH and TFIIA. The DNA is packed around the histone protein that form chromatin in eukaryotes. The chromatin packaging includes methylation, ribosylation with the help of enhancers and silencors. The chromatin is absent in case of prokaryotes.
Thus, the correct answer is Option (A) and (C).
The double layered sac surrounding the heart is the pericardium
Answer:
The correct answer is "crop rotation".
Explanation:
Crop rotation is the agricultural practice that consist of growing a series of different crops in sequenced seasons using the same soil. This practice helps to replace the lost soil nutrients by changing the soil nutrients consumption among the different crops. The benefits of crop rotation include reducing soil erosion and increasing soil fertility and crop yield.
They have the same properties
<span>All of them are highly reactive nonmetals
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