Answer:
D.
Explanation:
Sufficient inheritable variations
Bacteria and humans are structured differently. All bacteria fall into a a distinct domain of organisms called "Prokaryotes" which are identified with a striking characteristic of absence of well defined nucleus. While all the higher organisms like Humans, are "Eukaryotes" since their cells have a defined structure called "nucleus"
Exposure to pesticides or industrial chemicals always increases the risk of developing genetically influenced diseases.
<h3>What are pesticides?</h3>
Pesticides are chemical substances used to kill pest that attacks agricultural crops or domestic substances.
However, these pesticides and industrial chemicals can serve as mutagens that cause mutation when ingested by living organisms.
Mutations can utterly lead to genetically influenced diseases. Therefore, an exposure to pesticides or industrial chemicals always increases the risk of developing genetically influenced diseases.
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The challenges that scientists who want to study particular genes face are as follows:
1. There are many genes on a typical chromosome - A chromosome<span> typically contains hundreds to thousands of </span><span>genes.
2. </span>A small fraction of each chromosome encodes genes - <span> Genes only make up a small percentage of the genome; the rest is composed of non-coding sequences.
3. </span>It is difficult to distinguish between genes and non-coding genetic information - discriminating between<span> coding and </span>noncoding<span> regions in a given nonannotated genomic sequence is quite difficult.</span>