Emma and Anna are identical twins who were adopted by different families a few weeks after birth. Although genetically identical, they grew up with different physical and psychological characteristics. For example, though both inherited a tendency to grow large, Anna was slim and athletic due to the active lifestyle practiced in her adoptive family. This variability can be explained by how:
each zygote is unique.
longevity genes can make an individual less vulnerable to certain diseases.
for each genotype, a range of phenotypes can be expressed.
mutated genes can be a source of genetic variability.
Emma and Anna are identical twins who were adopted by different families a few weeks…
Emma and Anna are identical twins who were adopted by different families a few weeks after birth. Although genetically identical, they grew up with different physical and...
