Question

A super male XYY is characterised by
A) Under production of sex hormones
B) Overproduction of sex hormones
C) Reduced intelligence but aggressive nature
D) Both B and C

Answer 1

Hint:XYY syndrome is a rare chromosome disease that affects males. Characteristics of XYY syndrome are mostly slight and do not usually indicate a severe chromosome condition.

Complete answer:
XYY syndrome is a genetic chromosome disease caused by the presence of an extra Y chromosome. Normally, males have 46 chromosomes, including one X and one Y chromosomes. Males with XYY have 47 chromosomes, two of which are Y chromosomes. Many forms of XYY syndrome are due to a sperm cell division error prior to pregnancy. A cell division error happens occasionally after childbirth, resulting in a mosaic of cells of 46 chromosomes and 47 chromosomes.

The affected individuals are normally very tall, generally visible after 5 or 6 years of age, and result in an overall height of around 6 feet, 3 inches by adulthood. Most suffer serious acne in teenagers. Additional signs can include developmental disorders and behavioural issues such as impulsiveness. Intelligence is typically inside the standard range, while IQ is on average 10-15 points lower than that of siblings. Since these boys are at greater risk for learning difficulties, they can benefit from speech therapy, tutoring, and general knowledge of the particular problems they are dealing with. While early school years can be more difficult for boys with XYY syndrome, they usually continue to lead a large, stable, and happy life.

Hence, the correct answer is option D, both B and C.

Note:Affected boys can experience minor delays in hitting developmental milestones. Learning disorders have been identified in up to 50% of people, most of them speech delays and language difficulties. Reading problems became widespread due to a rise in the prevalence of dyslexia.