Two identical twin girls separated at birth are reunited 18 years later.one is 10% taller than the other why?

Question

please help me answer this question in the next few hours. Thanks

Answer 1

Height is determined/influenced by a LARGE number of factors other than genetics - it's an answer as simple as that.

Answer 2

The study of human growth is known as auxology. Growth and height have long been recognized as a measure of the health and wellness of individuals, hence part of the reasoning for the use of growth charts. For individuals, as indicators of health problems, growth trends are tracked for significant deviations and growth is also monitored for significant deficiency from genetic expectations. Genetics is a major factor in determining the height of individuals.

Height is, like other phenotypic traits, determined by a combination of genetics and environmental factors. Genetic potential plus nutrition minus stressors is a basic formula. Genetically speaking, the heights of mother and son and of father and daughter correlate, suggesting that a short mother will more likely bear a shorter son, and tall fathers will have tall daughters. Humans grow fastest (other than in the womb) as infants and toddlers (birth to roughly age 2) and then during the pubertal growth spurt. A slower steady growth velocity occurs throughout childhood between these periods; and some slow, steady, declining growth after the pubertal growth spurt levels off is common. These are also critical periods where stressors such as malnutrition (or even severe child neglect) have the greatest effect. Conversely, if conditions are optimal then growth potential is maximized; and also there is catch-up growth — which can be significant — for those experiencing poor conditions when those conditions improve.

The precise relationship between genetics and environment is complex and uncertain. Human height is 90% heritable

Answer 3

Although the girls have the same genotype which should mean they would be the same height the environment they grew up in will have affected the expression of those genes. Nutritional and exercise factors will affect the girl's phenotype( expression of genes). As an example - poor nutrition will reduce final height as will heavy exercise (eg in gymnasts)

Answer 4

Nutrition.
Obviously the shorter one lacked something in her diet that the taller one had.
It would be hard to pinpoint exactly which component, but it could have been something as simple as not enough calcium in her diet.

Answer 5

Different diet.

Answer 6

epigenetics and nutrition.