Second Paragraph

Question 1

Second paragraph points

Answer 1

Genetic factors play a significant role in
Research on twins has shown that
Furthermore, research has shown that
Several genes have been implicated in ASD
For instance
Therefore, genetics clearly play… however…

Question 2

Genetic factors play a significant role in…

Answer 2

…the development of ASD, with studies showing that this disorder tends to be heritable.

Question 3

Research on twins has shown that…

Answer 3

…approximately 90% of the differences observed in traits related to ASD are due to genetic factors (Sandin et al., 2017)

Question 4

Furthermore, research has shown that…

Answer 4

…monozygotic twins (identical) are more likely to both have ASD compared with dizygotic (non-identical) twins (Tick et al., 2016)

Question 5

Several genes have been…

Answer 5

…implicated in ASD, many of which are involved in brain development and synaptic function (Lombardo et al., 2021)

Question 6

For instance…

Answer 6

…mutations in genes such as CHD8 and SHANK3 have been associated with an increased risk for ASD (Lakoucheva et al., 2019)

Question 7

Therefore, genetics clearly play… however…

Answer 7

…a prevalent role in the heritability of ASD…. some research has also alluded to environmental factors, which will be the focus of the next paragraph (Lyall et al., 2019)