A normal sequence in the DNA code CCG -TTG-CAT. it turns out after 20 years of smoking, the same individual's code is now CCG-ATC-GCAT... what happened to the original code

There was a single nucleotide polymorphism (SNP) in the second codon and an insertion between the first and second codon

Explanation:

SNP: CCG-TTG-CAT --> CCG-TCG-CAT pro-leu-his --> pro-ser-his, change in one amino acid

insertion: CCG-TCG-CAT --> CCG-ATC-GCA-T pro-ser-his --> pro-ile-ala, change of reading frame

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.

not the best question format lol but what i think might as scale color is controlled by a single gene with two alleles, the green allele and the yellow allele. when moths that are homozygous for green scales are mated with moths that are homozygous for yellow scales, 100% of the offspring have green scales.