Question

if nucleotide variability of a locus equals 0% what is the gene variability and number of alleles at that locus

Answer 1

If the nucleotide variability of a locus equals 0%, this means that every individual in the population has the same nucleotide sequence at that locus. As a result, the gene variability is also 0%. Additionally, there is only one allele at that locus, since all individuals share the same sequence.

• Hartl, D. L., & Clark, A. G. (2007). Principles of population genetics (4th ed.). Sinauer Associates.
• Kimura, M. (1983). The neutral theory of molecular evolution. Cambridge University Press.

Answer 2

Nucleotide variability of 0% at a locus means that there is no genetic diversity at that locus, resulting in only one allele being present with a frequency of 100%.

Step-by-step explanation:

If the nucleotide variability of a locus equals 0%, this means there is no variation at that locus within the population being studied. The gene variability, also known as genetic diversity, would also be zero at this locus because there would be no different versions, or alleles, present. Consequently, the number of alleles at that locus would be one (since there must be at least one allele for a gene to exist). In a population genetics context, allele frequency describes how often an allele occurs in a gene pool relative to the other alleles for that gene. With no variability, the allele frequency for this single allele would be 1 or 100%, as it is the only one present.

In population genetics, nucleotide variability refers to the variation in nucleotide sequences at a specific locus in a population. If the nucleotide variability of a locus equals 0%, it means that all individuals in the population have the same nucleotide sequence at that locus. This implies that there is no gene variability and only one allele at the locus.