Nondisjunction, aneuplodies 6.2

Question 1

Disjunction

Answer 1

Separation of chromosomes

Question 2

Nondisjunction

Answer 2

When chromosomes fail to separate

Question 3

What does aneuploidy occur through?

Answer 3

Nondisjunction

Question 4

When can nondisjunction occur?

Answer 4

Mitosis, meiosis I or meiosis II, spermatogensis or oogenesis

Question 5

Turner syndrome

Answer 5

X0

Question 6

Klinefelter syndrome

Answer 6

XXY

Question 7

Triple X syndrome

Answer 7

XXX

Question 8

Tetrasomy X

Answer 8

XXXX

Question 9

Pentasomy

Answer 9

XXXXX

Question 10

Jacobs syndrome

Answer 10

XYY

Question 11

Aneuploid

Answer 11

an abnromal number of one or more chromsomes

Question 12

Polyploid

Answer 12

When there are >2 complete sets of chromosomes (not viable in humans)

Question 13

Mosacisim

Answer 13

When different cells have different karyotypes

Question 14

Gynandromorph

Answer 14

bilateral development can leave one side of the body to develop as male, and the other side as female

Question 15

X inactivation

Answer 15

One X chromosome is randomly inactivated during embryonic development through chromatin condensing (lyonization), forming Barr bodies

Question 16

How many bar bodies? XY

Answer 16

0

Question 17

How many bar bodies? XX

Answer 17

1

Question 18

How many bar bodies? XXX

Answer 18

2