Question

*100 POINTS* Turner syndrome occurs in females who instead of having two X chromosomes have either only one X chromosome or a fragmented X chromosome. Klinefelter syndrome occurs in males who have multiple X chromosomes. Consider the karyotype.

Which individual is shown in the karyotype?
A) male with Turner syndrome
B) male with Klinefelter syndrome
C) female with Turner syndrome
D) female with Klinefelter syndrome

Answer 1

Turner syndrome may be suspected prenatally based on prenatal cell-free DNA screening ― a method to screen for certain chromosomal abnormalities in a developing baby using a blood sample from the mother ― or prenatal ultrasound. Prenatal ultrasound of a baby with Turner syndrome may show:

Step-by-step explanation:

Signs and symptoms of Turner syndrome may vary among girls and women with the disorder. For some girls, the presence of Turner syndrome may not be readily apparent, but in other girls, several physical features are apparent early. Signs and symptoms can be subtle, developing slowly over time, or significant, such as heart defects.

Answer 2

The individual shown in the karyotype is most likely female with Turner syndrome.

Option C is correct

The karyotype clearly shows only one X chromosome, which is a characteristic feature of Turner syndrome. Individuals with Klinefelter syndrome typically have multiple X chromosomes, not just one.

The karyotype shows 46 chromosomes in total, with 44 autosomes and two sex chromosomes. This is the normal number of chromosomes for females (46, XX), while males typically have 44 autosomes and one X and one Y chromosome (46, XY).