Population decline causes an extreme genetic drift called a bottleneck effect. The correct option is C.
<h3>What is bottleneck effect?</h3>
The bottleneck effect describes how a population's size is reduced and then increased, affecting the distribution of genetic variation among its members.
It happened when the population reduced severely. Events like natural disaster or decline of the population.
Thus, the correct option is C) bottleneck effect.
Learn more about bottleneck effect
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Answer: A. Research into a phytochemical from a plant which might inhibit cancer development.
Explanation:
The chemoprevention is a process of utilization of chemical formulations such as medication, supplements and vitamins to the stop the growth of cancer cells. This is necessary and important for people which are at high risk of developing cancer.
The research for the phytochemical derived from the plants can be an example of chemoprevention as this will help in inhibiting the cancer development.
Those are glucose, oxygen and carbon dioxide (CO2).
<span>Respiration and photosynthesis are opposite processes in the plant cell. Photosynthesis makes the glucose and releases oxygen and they are used in cellular respiration to make ATP. The glucose is broken down during the respiration into CO2, which is used in photosynthesis. While H2O is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form H2O. </span>
<h3><u>Answer;</u></h3>
Nucleotides are the sub units of DNA, their function is to form the genetic code.
<h3><u>Explanation</u>;</h3>
- Nucleotides are the subunits of DNA. The four nucleotides are adenine, cytosine, guanine and thymine.
- <em><u>Each of the four bases has three components, a phosphate group, a deoxyribose sugar and a nitrogen-containing base.The four different nucleotides in DNA differ only in the nitrogenous base. The nucleotides bind together in specific pairs , adenine with thymine and cytosine with guanine.</u></em>
- The function of nucleotides is to build DNA. The way they bind leads to the characteristic double helical structure of DNA. The order of the different nucleotides forms the genetic code.
The Endoplasmic reticulum is the organelles that is involved in the synthesis of oils.
<u>Explanation:</u>
The endoplasmic reticulum is of 2 types that is the ''smooth endoplasmic reticulum'' and the ''rough endoplasmic reticulum''. The rough endoplasmic reticulum is lined with ribosomes whereas the smooth endoplasmic reticulum is plain.
Since ribosomes are present the rough endoplasmic reticulum is involved in protein synthesis whereas the smooth endoplasmic reticulum is involved in the production of oils or lipids that are required for the cell.