If the nucleotide variability of a locus equals 0%, what is the gene variability and number of alleles at that locus? a. gene variability=0%; number of alleles=0 b. gene variability=0%; number of alleles=1 c. gene variability=0%; number of alleles=2 d. gene variability>0%; number of alleles=2

Verified step by step guidance

1. Step 1: Understand the question. The question is asking about the gene variability and number of alleles at a locus when the nucleotide variability is 0%. Nucleotide variability refers to the degree of variation in the nucleotide sequence at a specific locus in a population.
2. Step 2: Understand the concept of gene variability. Gene variability refers to the degree of variation in the gene sequence at a specific locus in a population. If the nucleotide variability is 0%, it means there is no variation in the nucleotide sequence at that locus. Therefore, the gene variability would also be 0% because there is no variation in the gene sequence.
3. Step 3: Understand the concept of alleles. Alleles are different forms of a gene that are found at the same place on a chromosome. Even though there is no variation in the nucleotide sequence at the locus, there is still at least one form of the gene present, which is the allele. Therefore, the number of alleles at that locus would be 1.
4. Step 4: Compare the understanding from step 2 and step 3 with the given options. The option that matches our understanding is 'gene variability=0%; number of alleles=1'.
5. Step 5: Choose the correct answer. The correct answer is 'b. gene variability=0%; number of alleles=1'.