An individual homozygous for the recessive sickle hemoglobin , HgbS , has a short expectancy of life , whereas the life expectancy of the standard hemoglobin ( HgbA ) homozygote and also the heterozygote is normal ( though heterozygote individuals will suffer periodic problems ) .
The life expectancy of the standard hemoglobin ( HgbA ) homozygote and also the heterozygote is normal ( though heterozygote individuals will suffer periodic problems ) .