Question

A boy with an extra X chromosome probably has which of the following syndromes?

a. down sydrome
b.klinefelter sydrome
c.XXX sydrome

Answer 1

why is it not down syndrome?

Answer 2

it is not down

Answer 3

i thought it was because it means a common birth defect that is usually due to an extra chromosome

Answer 4

Yea but it's about the type of chromosome that's added here.
The X chromosome is added.

What is the normal sexual genotype in boys? XX or XY?

Answer 5

^

Answer 6

Actually Ds seems obvious , but when u look deep its not

Answer 7

its XX

Answer 8

No, XX is the genotype for females.
Males have 1 X chromosome and 1 Y

Answer 9

XY

Answer 10

ohhh

Answer 11

XX- female
XY- Male

Answer 12

Down syndrome is caused by a trisomy 21, meaning 1 21th chromosome is added.
The X and Y chromosomes are the 23th

Answer 13

Down's syndrome is trisomy on chromosome no 21 (which is an autosome.)

Answer 14

Also, boys have the genotype XY. When you add an X, it'll become XXY. So it's also not XXX syndrome

Answer 15

XXX is a condition called as Super females or Triple X syndrome.

Answer 16

So , Klinefelter

Answer 17

yes It occurs in Males i.e males are the patient of this syndrome.

Answer 18

thank you

Answer 19

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