A single base deletion mutation of "A" nucleotide has occurred at the start codon of the APC2 gene and is passed on to the next generation. This mutation has been named APC2del. In the offspring that has inherited APC2del, this allele will most likely be:

p

explanation:

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides