It's
well known that kids vary in height. "The
influence of genetic factors on differences between children's Body
Mass Index increases from 43 percent at age four to 82 percent at age
10, reports a new study. The researchers studied 2,556 pairs of twins
from the Twins Early Development Study. Data were collected in
England and Wales in 1999 and 2005 when the twins were four and 10
years old respectively"(Science Daily 1). The
twin analysis confirmed previous studies with a doubling of genetic
influence, called 'heritability', showing that the reasons that some
boys and girls are bigger than others are 43% genetic at age 4 and
82% genetic at age 10. This is caused by gene-environment correlation A child's environment can trigger genes that cause kids
to be tall. Kids may have a tall gene, but if they live in an environment where being shorter is preferred the gene may never activate.
Article: http://www.sciencedaily.com/releases/2014/04/140423221418.htm
Nature of Science Themes :
Science is collaborative and Science is based on evidence
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