Three questions that focuses on the cause and effect relationship between the genetic code and gene expression, mechanisms of gene regulation and/or the role of DNA segments that is not involved in coding the proteins are:
i. Illustrate the process of translation and explain it with the help of a diagram.
ii. What are codons? Name the stop codons in eukaryotes.
iii. What are exons and introns? Explain what happens to the introns during the process of transcription and translation?
Answer:
A.The hole in the ozone layer
Explanation:
• Montreal protocol is an international treaty that was signed to control the use of substances that are resulting in the depletion of the ozone hole.
This treaty was signed in the year 1987 and became effective form 1989.
• Since the time that this treaty has come into force, there has been a significant improvement in the ozone hole that was observed over Antarctic as it's size has decreased.
• This improvement has been possible because the treaty helped to phase out chemicals such as chlorofluorocarbons, carbon tetrachloride, etc. that are responsible for ozone hole depletion.
Genetic engineering is the
direct treatment of an organism’s genome using biotechnology. It is a set of
technologies used to alter the genetic makeup of cells, together with the
transport of genes within and across species boundaries to produce improved
organisms. An example would be to
protect plant from insect damage, it can be made into a transgenic plant.
Transgenic plant are called genetically modified organisms (GMO) because there
is a gene added or removed in the original plant to obtain a set of
characteristic such as insect damage.
Answer:
Your answer is E). Fossils in different layers will obviously be much older/younger than others.
