Pedigree Help

Question 1

horizontal pattern of inheritance

Answer 1

recessive

Question 2

vertical pattern of inheritance if the trait is extremely common in population

Answer 2

recessive

Question 3

two affected parents can produce unaffected children

Answer 3

dominant if parents heterozygote

Question 4

vertical pattern of inheritance

Answer 4

dominant

Question 5

trait shows up in every generation

Answer 5

dominant

Question 6

sons and daughters of an affected female each have a 50% chance of being affected

Answer 6

x linked dominant

Question 7

trait often skips a generation as mutation passes from grandfather through a carrier daughter to grandson

Answer 7

x linked recessive

Question 8

trait can appear in successive generations when a sister of an affected male is a carrier. each of her sons has a 50% chance of getting it

Answer 8

x linked recessive

Question 9

all the daughter but none of the sons of an affected male will be affected

Answer 9

x linked dominant

Question 10

affected male passes x linked mutation to all his daughters, who are thus carriers. each son of these carriers has 50% chance to inherit defective allele

Answer 10

x linked recessive

Question 11

the trait appears in more males than females because a female must receive two copies of the rare defective allele to display phenotype

Answer 11

x linked recessive

Question 12

all the children of two affected parents should be affected

Answer 12

recessive

Question 13

trait is seen in every generation as long as affected males have female children

Answer 13

x linked dominant

Question 14

affected children always have at least one affected parent

Answer 14

dominant

Question 15

mutation never pass from father to son

Answer 15

x linked recessive

Question 16

the trait first appears among several members of one generation and is not seen in earlier generations

Answer 16

recessive

Question 17

more females than males show the aberrant trait

Answer 17

x linked dominant

Question 18

affected individuals can be the children of two unaffected carriers

Answer 18

recessive due to inbreeding

Question 19

with rare affected homozygous female, all her sons will be affected and all daughters will be carriers

Answer 19

x linked recessive

Question 20

only males receive affected trait females cannot transmit it

Answer 20

y linked