<span>The correct answer is B. The law of conservation of energy. The energy was in them and when the reaction came the energy was changed form, which is what the law of conservation of energy is, energy can't be created or destroyed, just like matter, it just changes form.</span>
The answer is negative inducible and positive repressible.
This is because, since the gene is constitutive, it is always transcribed
unless repressed. It is also structural because it codes for enzymes or proteins
that are non-regulatory. The fact that transcription factors cannot bind to the
promoter means it cannot be transcribed (hence also repressed by the mutation).
Answer:
The best explanation if we observe an epithelial cell with chromosomes are visible and two cell nuclei is that the cell has just gone through telophase but not cytokinesis (option b).
Explanation:
A somatic cell, when found in mitosis, exhibits the chromosomes distributed in both poles and the outline of two nuclei in the telophase phase, just before cytokinesis.
In mitotic telophase:
- Chromatids, which are chromosomes, are found in the cell poles.
- It initiates the formation of the nucleus membrane.
- The chromosomes begin to turn into chromatin.
- Disappearance of the mitotic spindle, duplication of organelles and cytoplasmic invagination.
The division and differentiation of the nuclei in telophase is called karyokinesis. Later, cytokinesis occurs, where the daughter cells are separated.
The other options are not correct because:
<em> a and d. In the other phases described, </em><em><u>S and G1,</u></em><em> no chromosome distribution is observed at the poles.</em>
<em> c. A somatic cell does not experience </em><em><u>meiosis</u></em><em>.</em>