ADHD is a highly heritable trait with published broad sense heritability estimates in the range of 0.6-0.9. Larsson et al. 2014 (doi: 10.1017/S0033291713002493 ) reported the concordance valuesshown in the table below for pairs of monozygotic (MZ) or dizygotic (DZ) twins with data for maleand female pairs shown separately, using data from the Swedish twin register (59,000 twin pairs,born between 1959 and 2001).Male MZ twins Male DZ twins Female MZ twins Female DZ twins56%16%37%13%Based on the data in this table, does ADHD appear to be more heritable in males or females?Provide one sentence of rationale to support your answer.

Answered: ADHD is a highly heritable trait with…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

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ADHD is a highly heritable trait with published broad sense heritability estimates in the range of 0.6-
0.9. Larsson et al. 2014 (doi: 10.1017/S0033291713002493 ) reported the concordance values
shown in the table below for pairs of monozygotic (MZ) or dizygotic (DZ) twins with data for male
and female pairs shown separately, using data from the Swedish twin register (59,000 twin pairs,
born between 1959 and 2001).
Male MZ twins Male DZ twins Female MZ twins Female DZ twins
56%
16%
37%
13%
Based on the data in this table, does ADHD appear to be more heritable in males or females?
Provide one sentence of rationale to support your answer.

Expert Solution

Step 1: what is ADHD

ADHD is Attention Deficit Hyperactivity Disorder.

Evaluating the heritability of a trait like ADHD involves twin studies, which compare concordance rates between monozygotic (MZ) and dizygotic (DZ) twins. In such studies, a higher concordance rate among MZ twins, who share 100% of their genetic material, compared to DZ twins, who share roughly 50%, suggests a significant genetic contribution to the trait.

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