Relative morphologies of chromosomes of an individual indicate his/her

In Turner syndrome,a female has:

In humans,sometimes during gametogenesis,sex chromosomes do not separate,resulting in a chromosome number of $45$,$47$,or $48$. In this condition,which of the following genotype and phenotype combinations is correct?

Frequency of Down's syndrome increases when the maternal age is

In which of the following disorders is the symptom of gynaecomastia seen in individuals?

Identify the disease on the basis of the following characters:
$(1)$ Short stature with a small round head.
$(2)$ Furrowed tongue and partially open mouth.
$(3)$ Palm is broad with a characteristic palm crease.