mutations -klinefelter's syndrome (quiz 1)

Question 1

mutation

Answer 1

a change in DNA (a “mistake” in DNA)

Question 2

what do mutations at to the population

Answer 2

diversity

Question 3

are mutations usually dominant or recessive

Answer 3

recessive

Question 4

are mutations positive or negative

Answer 4

mostly negative

Question 5

are mutations acquired or inherited

Answer 5

inherited

Question 6

what causes a mutation

Answer 6

a mutagen (anything)

Question 7

examples of a mutagen

Answer 7

chemicals, food, additive, radiation, viruses

Question 8

somatic mutation

Answer 8

in body cells, not passed on

Question 9

germ mutation

Answer 9

in sex cells, passed on

Question 10

deletion

Answer 10

a gene is omitted

Question 11

insertion

Answer 11

a gene is added

Question 12

frameshift

Answer 12

a section is reversed

Question 13

whats worse: chromosome mutation or gene mutation

Answer 13

chromosome mutation

Question 14

inversion

Answer 14

piece of a chromosome breaks off and reattaches itself to the same chromosome backward

Question 15

translocation

Answer 15

piece of one chromosome breaks off and reattached itself to a different chromosome

Question 16

example of translocation

Answer 16

stillbirths

Question 17

human chromosome number

Answer 17

46 (2n)

Question 18

n =______

Answer 18

of chromosomes in a sperm or egg

Question 19

aneupliody

Answer 19

1+ or - the 2n number (either 45 or 47 chromosomes)

Question 20

monosomy

Answer 20

45 (2n-1)

Question 21

turners syndrome

Answer 21

sterile female undeveloped, no hips, no period, no breasts, lack of neck, NOT mentally challenged

Question 22

cartotype

Answer 22

picture of chromosomes

Question 23

what does the sex chromosome look like in turners syndrome

Answer 23

X_

Question 24

trisomy

Answer 24

47 (2n+1)

Question 25

what is down’s syndrome caused by

Answer 25

extra #21 chromosome

Question 26

what is Klinefelter’s syndrome

Answer 26

(XXY) sterile male feminized, sperm and egg didnt pull apart