Quality of life<span> (QOL) is the general well-being of </span>individuals and societies<span>, outlining negative and positive features of </span>life<span>. It observes </span>life<span> satisfaction, including everything from physical health, family, education, employment, wealth, religious beliefs, finance and the environment.</span>
Answer:The expected genotype ratio when two heterozygotes are crossed is 1 homozygous dominant 2 heterozygous 1 homozygous recessive. When a phenotypic ratio of 2 1 is observed, there is probably a lethal allele.