How is the genetic code of someone with autism different than a healthy person?

But less than 1 percent of non-syndromic cases of autism stem from mutations in any single gene. So far, at least, there is no such thing as an 'autism gene' — meaning that no gene is consistently mutated in every person with autism. There also does not seem to be any gene that causes autism every time it is mutated.

Explanation:

PLZ

Morula

Explanation:

The general meaning of  blastocyst is a hollow cavity and thus it is the correct term which defines a hollow cellular mass that develops with the first week of fertilization. While morula is the stage in embryogenesis that comes before the blastocyst stage but at this stage there are 16 undifferentiated solid cells  therefore Morula is incorrect choice for this answer.

Fetus is  an advanced stage of embryo and thus it is also incorrect.  

Placenta is a tube which connect the fetus with the mother for exchange of food and nutrition. Thus it is also incorrect