There are two explanations for this phenomenon: phosphorylation of the protein X in the heart activates its function (Option C) or phosphorylation of the protein X in the kidney and the brain deactivates its function (Option D). Therefore, both Option C and Option D are correct.
- Phosphorylation is a posttranslational protein modification that is capable of activating or deactivating protein function.
- Phosphorylation alters the three-dimensional structure of a protein, thereby modifying its function (i.e., activate or deactivate the target protein).
- Phosphorylation occurs at specific amino acids (e.g., serine and threonine residues) of the target protein.
- Moreover, mRNA splicing (RNA processing) occurs before the protein state, it is a transcriptional process. This process consists in removing the non-coding regions or 'introns' from pre-mRNA and subsequent joining protein-coding regions or 'exons' to enable the translation of the mRNA into a protein.
- In consequence, in this case, it is possible that 1-phosphorylation of the protein X in the heart activates its function, or 2-phosphorylation of the protein X in the kidney and the brain deactivates its function. Therefore, both Option C and Option D are correct.
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Answer:
When a population is in Hardy-Weinberg equilibrium for a gene, it does not evolve and allelic frequencies will remain the same for generations.
There are five basic Hardy-Weinberg assumptions: there is no mutation, the mating is random, there is no gene flow, the population size is infinite and there is no selection.
If the assumptions are not met for a gene, the population can evolve for that gene (that is, the allelic frequencies of that gene may change).
The mechanisms of evolution are violations of the different Hardy-Weinberg assumptions: mutation, non-random mating, genetic flow, finite population size (gene drift) and natural selection.
[No image given – I found the
attached image in other source]
From right to left.
1) Cytokinesis is almost
finished, so it’s the end of Telophase
2) The chromatids have just
split up and are migrating to each pole, so it’s Anaphase
3) All chromosomes are in the
equatorial plane, so it’s the end of Metaphase
4) The chromosomes are in the
poles and cytokinesis has just started, so it’s the beginning of Telophase
5) The spindle apparatus is
complete and the chromosomes are moving to the equatorial plate, so it’s the
beginning of Metaphase
6) The spindle apparatus is forming,
so it’s Prophase
If you want to put them in
chronological order, it’s like this:
6-5-3-2-4-1
Answer: The difference between them are that Biotic things are living things and abiotic is non living. The biotic and abiotic factors help eachother maintain the ecosystem .
I would say D idk or it would be B I hope this helps