Answer:
The answer is 4
Explanation:
The answer is 4 because we are talking about pairs of homologous chromosomes and there two copies are held together and they are located in the centromere.
Synapsis is two homologous chromosomes pairing. During the event of <em>meiosis </em>homologous chromosomes are being pared but then also separated because of reducing the genetic content of the resulting haploid cells.
It's B because when the surface moves the wind forces
Answer:
D) presence of transcription activators or repressors
Explanation:
The reason why this is not post-transcriptional regulation is that activators actually start the process of transcription by binding to specific sites. while on contrary when repressor binds it halt the process.
For example, there is a protein called CAP which in the presence of cAMP bind with promoter region and enhances the activity of RNA polymerase . While in the absence of cAMP it can not bind to promoter hence the transcription stooped.
