JAMB - Biology (2006 - No. 30)
Hassan and Hussain are identical twins but Hassan grows taller and fatter from Hussain. This is probably because
Hassan inherits genes for tallness and fatness from the father
They have dissimilar genotypes
Hussain is endowed with genes for shortness and thinness
They are raised in different environment
설명
Although, identical twins share the same DNA, subtle differences in their prenatal environment, particularly in placental development and nutrient/oxygen distribution, can lead to variations in growth, resulting in one twin being taller than the other.