The answer is B, use energy they take in from the environment to convert inorganic molecules into complex organic molecules.
Answer:
Transcription, mRNA (processing, transport, localization and stability), translation.
Explanation:
- Transcription is regulated in two levels, though chromatin regulation (methylation and acetylation) to loose or increase histone's affinity to DNA and through cis and trans elements such as promoters, enhancers, and silencers (cis) to active/deactivate and RNA polymerase and transcription factors and co-factors (trans).
- mRNA can be regulated using poly-A tails or 5'-caps to shorten or give them more time before they degrade, it could also be spliced to eliminate introns.
- In the translation stage, the regulation occurs during the initiation through a scanning procedure that ensures the 40s ribosomal subunit bind correctly to the untranslated portion of RNA
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Answer:
Explanation:
hepatic portal vein is a blood vessel that carries blood from the gastrointestinal tract and spleen to the liver. This blood are usually rich in nutrient because it contains extraction from digested materials or food substances in the gastrointestinal tract and it is processed in the liver for removal of toxins before the blood returns to the heart.
Answer:
<h2>Two normal cells, n and n;</h2><h2>One cell lacks chromosomes : n-n</h2><h2>One cell contain extra set of chromosomes: n+n=2n</h2>
Explanation:
If all of the chromosomes experience non-dis-junction in meiosis II, means that sister chromatids failed to separate during meiosis II then
a. half the cells are normal containing n number of chromosomes (n).
b. One cell lacks whole set of chromosomes
c. and one cell with two copies of the chromosomes (n+n).
Answer:
Codominance
Explanation:
This is an example of codominance.
Basically with this type of genetics, both alleles for that trait, in this case feather color, are dominant. This means that both will appear in the phenotype, instead of a dominant phenotype overshadowing a recessive phenotype.
Here, the two dominant alleles are the one that governs white pigment and the one that governs black pigment. Since codominance is occurring, we see a speckled chicken instead of just an entirely white one or an entirely black one.
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