Answer: Option A ,Band C.
Explanation:
Sympatric speciation is the evolution or isolation of new species from the original populations of species occupying in the same geographical area. Sympatric speciation commonly occur due to sexual selection of mates can cause reproductive barriers or isolation which keep gene pools separate. A plant with extra set of homologous chromosomes is an example of sympatric speciation.
These dark areas are called maria. They are thought to be formed by volcanic eruptions in the moon's history.hope this helped:)
<u>In the process of translation, the statement stands correct and applies are as follows:</u>
- The ribosome has two sub-units that work together.
- Amino acids are joined by peptide bonds.
- Each tRNA brings in exactly one amino acid that corresponds to the anti-codon.
- The order of the amino acids is determined by the mRNA which is transcribed from DNA.
Answer: Options A, B, C, and E
<u>Explanation:</u>
In the process of translation, ribosomes are the structural unit where the translation is being performed and it has the two sub-units which enact together the translational process.
Any two amino acids are bonded together by peptide bond and tRNA brings one amino acid at a time which corresponds to the anti codon. The order of amino acids is determined by mRNA transcribed from the DNA, and not from the ribosome. Thereby, all given options are correct except the option D.
Answer:
B. the action of microRNAs that block translation of specific mRNA molecule
C. the action of RNA–protein complexes that degrade the regulatory proteins responsible for initiating transcription.
Explanation:
RNA interference occurs what RNA prevent the translation of some gene this is done by neutralizing target mRNA molecule. It suppresses the effects of some desires genes through its action.
MicroRNA and small interfering RNA (miRNA and siRNA) are the major RNA that controls interference. siRNA and miRNA prevent translation by directing some enzmes complexes to denature the mRNA molecule needed for translation. They intiate post transcriptional splicing.
RNA interference is found in eukaryote and some animals and its initiated by enzyme Dicer that inhibits translation by degrading the enzymes action.
