<h3><u>Answer;</u></h3>
Chromatin
<h3><u>Explanation</u>;</h3>
- Prophase is the first phase of mitosis, which a type of cell division that takes place in the somatic cells, that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells.
- During this stage the genetic material is called chromatin, which is the complex of DNA and proteins contained in the nucleus.
- During prophase the chromatin is condensed and the chromosomes become more visible. DNA molecules are progressively shortened and condensed by coiling.
<span>The least likely situation out of those listed here for a scientist to revise her experimental methods, would be if her results support her hypothesis. In this instance, the outcome of the experiment positively provides evidence that the original hypothesis is correct, and the experiment would therefore be a success and not necessarily require repeating.</span>
Answer: e. swordfish and tilefish
Explanation: Consumption of fish is good to the health of the body as it supplies nutrients to the body. However, some species of fish are to avoided because of the high mercury present in them. Some fishes like the king mackrel, swordfish etc are to be avoided. Methylmercury which is a form of mercury can cause severe damage to the nervous system of pregnant women and their unborn babies.
Answer: b. Secondary metabolites are often the desired product, and are only produced in stationary phase.
Explanation:
The secondary metabolites are the organic compounds that are produced by the microbes such as bacteria, fungi and even by the plants. These are not involved in the growth, development and reproduction of the organisms. But they can provide a advantage for the survival. It helps in plant defense against the process of herbivory and other interspecies defense. Humans take the secondary metabolites from these organisms in the form of medicines, pigments, and recreational drugs.
The secondary metabolites are produced only in the stationary phase of growth. Thus it is significant for the collection of these secondary metabolites in the stationary phase.