Do prokaryotes and eukaryotes both have operons?

Do prokaryotes and eukaryotes both have operons?

In eukaryotes there are no operons, each gene is transcribed separately into its own mRNA. In both eu- and prokaryotes the DNA molecules are condensed with the aid of different proteins.

Do prokaryotes and eukaryotes both have exons?

Explanation: The correct answer is that prokaryotes only have exons, whereas eukaryotes have exons and introns. As a result, in eukaryotes, when mRNA is transcribed from DNA, the introns have to be cut out of the newly synthesized mRNA strand. The exons, or coding sequences, are then joined together.

How does recombination occur in prokaryotes quizlet?

How does recombination of genes occur in prokaryotes? Prokaryotes exchange genes during conjugation. Two bacteria come close, a sex pilus extends from bacterium to the other forming a cytoplasmic bridge between the two. One DNA strand is transferred from one cell (donor) to the other (recipient).

Do both prokaryotic and eukaryotic have a nucleus?

There are several differences between the two, but the biggest distinction between them is that eukaryotic cells have a distinct nucleus containing the cell’s genetic material, while prokaryotic cells don’t have a nucleus and have free-floating genetic material instead.

What is common regulation of gene expression in both prokaryotes and eukaryotes?

The most common way of gene expression is regulated in both prokaryotes and eukaryotes is through the: Control of mRNA translation. Breakdown of proteins formed by translation.

How do prokaryotic cells regulate gene expression?

Prokaryotic cells can only regulate gene expression by controlling the amount of transcription. It therefore became possible to control gene expression by regulating transcription in the nucleus, and also by controlling the RNA levels and protein translation present outside the nucleus.

Which aspect of gene expression is the same in both eukaryotes and prokaryotes?

31 Prokaryotic versus Eukaryotic Gene Expression

Prokaryotic organisms Eukaryotic organisms
Gene expression is regulated primarily at the transcriptional level Gene expression is regulated at many levels (epigenetic, transcriptional, post-transcriptional, translational, and posttranslational)

Why don t prokaryotes have introns and exons?

Prokaryotic cells need and use virtually all of there DNA to synthesize protein and RNA molecules. After DNA is transcribed into RNA in a eukaryotic cell, it’s further edited in the nucleus, part of the RNA is cut out, this part cut out is the introns. It’s absent in prokaryotes because there’s no nucleus.

How does recombination occur in prokaryotes?

In prokaryotes, genetic recombination occurs through the unilateral transfer of DNA. This includes transduction, transformation, and conjugation. Transduction the process by which DNA is transferred between bacterial cells by a virus. Transformation is the uptake of DNA from a bacteria’s environment.

Is binary fission The main process of genetic diversity in prokaryotes?

Key Points Binary fission is a type of reproduction in which the chromosome is replicated and the resultant prokaryote is an exact copy of the parental prokaryate, thus leaving no opportunity for genetic diversity.

What is the difference between Rho independent and Rho dependent termination of transcription?

In the Rho-independent transcription termination, RNA transcription stops when the newly synthesized RNA molecule forms a G-C rich hairpin loop, followed by a run of U’s, which makes it detached the DNA template. In the “Rho-dependent” type of termination, a protein factor called “Rho” [P factor] is used to stop RNA synthesis at specific sites.

What are the different modes of transcription termination in prokaryotes?

In prokaryotes, two different modes of transcription termination, viz: (ii) Rho-dependent are well known. It is also known as intrinsic transcription termination. It involves terminator sequences within the RNA that signal the RNA polymerase to stop.

What is the RNA polymerase termination sequence?

It involves terminator sequences within the RNA that signal the RNA polymerase to stop. The terminator sequence is usually A palindromic sequence that forms a stem-loop hairpin structure that leads to the dissociation of the RNAP from the DNA template.