8.3 Modes of Inheritance

Question 1

autosomal

Answer 1

traits carried by autosomes (chromosomes 1 - 22)

Question 2

sex-linked

Answer 2

traits carried by sex chromosomes (usually X)

Question 3

dominant

Answer 3

only need one copy of the trait-causing allele to have trait

Question 4

recessive

Answer 4

need both copies of trait-causing allele to have trait

Question 5

Y-linked

Answer 5

only affects men, always gets passed from father to son

Question 6

circle

Answer 6

female

Question 7

square

Answer 7

male

Question 8

filled in shape

Answer 8

has trait

Question 9

shape with slash through it

Answer 9

deceased

Question 10

two shapes with lines meeting at shared point

Answer 10

twins

Question 11

shape with square brackets around it

Answer 11

adopted

Question 12

triangle

Answer 12

miscarriage

Question 13

horizontal line between two unrelated people

Answer 13

marriage line

Question 14

vertical line dropping from marriage line

Answer 14

line of descent

Question 15

horizontal line attached to line of descent with vertical lines dropping from it

Answer 15

sibling line

Question 16

Roman numerals

Answer 16

generations

Question 17

affected parents with unaffected child

Answer 17

dominant trait

Question 18

unaffected parents with affected child

Answer 18

recessive trait

Question 19

significantly more affected males than affected females

Answer 19

sex-linked

Question 20

affected mother with all affected sons

Answer 20

sex-linked recessive

Question 21

affected father with all affected daughters

Answer 21

sex-linked dominant