Question

Infant with cutis aplasia (absence of epidermis over the skull), microphthalmia, holoprosencephaly, omphalocele (midline defects):

a) Patau syndrome (Trisomy 13)
b) Edward syndrome (Trisomy 18)
c) Down syndrome (Trisomy 21)
d) Turner syndrome

Answer 1

The subject of this question is Biology. The correct answer is a) Patau syndrome (Trisomy 13), which is a chromosomal disorder causing physical and developmental abnormalities.

Step-by-step explanation:

The subject of this question is Biology. Specifically, it is related to chromosome abnormalities and genetic disorders. The question asks about the characteristics of an infant with cutis aplasia, microphthalmia, holoprosencephaly, and omphalocele, and the correct answer is a) Patau syndrome (Trisomy 13).

Patau syndrome, also known as Trisomy 13, is a chromosomal disorder caused by the presence of an extra copy of chromosome 13. This results in various physical and developmental abnormalities. The mentioned symptoms in the question, such as cutis aplasia (absence of epidermis over the skull), microphthalmia (small eyes), holoprosencephaly (abnormal brain development), and omphalocele (midline defect in the abdomen), are all associated with Patau syndrome.

Other options mentioned in the question, such as Edward syndrome (Trisomy 18), Down syndrome (Trisomy 21), and Turner syndrome, are different chromosomal disorders with their own distinct characteristics and symptoms.