The table shows the binomial names of four organisms.
| Organism | Genus | Species |
|---|---|---|
| W | Felis | catus |
| X | Conus | catus |
| Y | Ameiurus | catus |
| Z | Felis | silvestris |
What can be concluded?
Correct Answer: \( \boxed{\mathbf{C}} \)
In binomial nomenclature, organisms that belong to the same genus are more closely related than those sharing only the species name. Organisms W (Felis catus) and Z (Felis silvestris) both belong to the genus Felis, indicating the closest evolutionary relationship.
Classification systems evolve with new findings. Which type of evidence was used to establish the domains of life currently recognized?
What is always a consequence of single-nucleotide polymorphisms (SNPs) within a species?
Correct Answer: \( \boxed{\mathbf{B}} \)
A single-nucleotide polymorphism (SNP) is a variation in a single DNA base between individuals. Therefore, individuals with SNPs have different genomes. SNPs do not always change proteins, so they do not necessarily produce different proteomes, and they are not insertion or deletion mutations.
