Genetic Interactions Part 2

Question 1

Non-Allelic Gene Interaction

Answer 1

Novel Phenotype
Recessive Epistasis
Dominant Epistasis
Complimentary Epistasis
Duplicate Gene

Question 2

T or F

after the discovery of the computation model of Mendel, there are several instances that DO NOT follow the computation

Answer 2

True

Question 3

the dihybrid testcross was discovered by

Answer 3

George Beadle
Edward Tatum
1941

Question 4

the development of dihybrid testcrosses leads to the idea of

Answer 4

modifier genes

Question 5

these are genes that enhance or inhibit the expression of the other gene.

Answer 5

modifier genes

Question 6

complete dominance at gene pairs (mendelian interaction)

Answer 6

novel phenotype

Question 7

the modifier gene completely nulls, the effect of the other genes if it is recessive.

complete dominance but recessive is epistatic.

Answer 7

recessive epistasis

Question 8

the modifier gene completely nulls, the effect of the other genes if it is dominant.

complete dominance but dominant is epistatic.

Answer 8

dominant epistasis

Question 9

T or F

in dominant epistasis, even if both genes are recessive, the modifier gene is expressed.

Answer 9

True

Question 10

at least one allele of of each gene is dominant.

Answer 10

complimentary epistasis

Question 11

at least one dominant presence in any gene.

Answer 11

duplicate gene

Question 12

There are patterns of inheritance that is highly and/or only dependent on the gene interactions in sex chromosomes. It should be noted that the chances of getting male or female offspring is always 50%.

Answer 12

sex-linkage

Question 13

There are two (2) types of gene interactions in sex-linkage:

Answer 13

sex-linked traits
sex-influenced traits

Question 14

genes controlling the trait can be found in X and Y chromosome.

Answer 14

sex-linked trait

Question 15

gene controlling the trait can be found in autosomal chromosome.

Answer 15

sex–influenced traits

Question 16

described as a graphical representation of distribution and expression of genetic traits or disease among members of interrelated generations.

Answer 16

pedigree analysis

Question 17

Sex- Linked Dominant Traits (Genotype)

X^A X^A
X^A X^a
X^A Y
X^a Y

Answer 17

female - affected
female - carrier
male - affected
male - unaffected

Question 18

Sex- Linked Recessive Traits (Genotype)

X^A X^A
X^A X^a
X^A Y
X^a Y

Answer 18

female - unaffected
female - carrier
male - unaffected
male - affected

Question 19

guess the sex-linked trait of the disorder/disease

Fragile X Syndrome (mental retardation)

Answer 19

X-linked dominant

Question 20

guess the sex-linked trait of the disorder/disease

Vitamin D resistant rickets (soft bone)

Answer 20

X-linked dominant

Question 21

guess the sex-linked trait of the disorder/disease

Incontinentia pigmenti (hyperactive apoptosis)

Answer 21

X-linked dominant

Question 22

guess the sex-linked trait of the disorder/disease

Aicardi Syndrome (No cerebral hemispheres)

Answer 22

X-linked dominant

Question 23

guess the sex-linked trait of the disorder/disease

Hemophilia (no blood clotting)

Answer 23

X-linked recessive

Question 24

guess the sex-linked trait of the disorder/disease

Color Blindness (red and green)

Answer 24

X-linked recessive

Question 25

guess the sex-linked trait of the disorder/disease Muscular Dystrophy

Answer 25

X-linked recessive

Question 26

guess the sex-linked trait of the disorder/disease Pattern Baldness

Answer 26

X-linked recessive

Question 27

guess the sex-linked trait of the disorder/disease Hypertrichosis pinnae auris (ear hair)

Answer 27

Y-linked (no dominant/recessive)

Question 28

guess the sex-linked trait of the disorder/disease Determination of sex

Answer 28

Y-linked (no dominant/recessive)

Question 29

guess the sex-linked trait of the disorder/disease Webbed Toes

Answer 29

Y-linked (no dominant/recessive)

Question 30

guess the sex-linked trait of the disorder/disease Ichthyosis hystix (Porcupine or Wood Skin)

Answer 30

Y-linked (no dominant/recessive)

Question 31

guess the sex-linked trait of the disorder/disease Color Blindness (red and green)

Answer 31

X-linked recessive

Question 32

guess the sex-linked trait of the disorder/disease Maternal Optic Neuropathy (degradation of nerve)

Answer 32

Mitochondrial-linked

Question 33

guess the sex-linked trait of the disorder/disease Mitochondrial myopathy (degradation of muscles)

Answer 33

Mitochondrial-linked

Question 34

guess the sex-linked trait of the disorder/disease Leigh Syndrome (Abnormal ATP production)

Answer 34

Mitochondrial-linked

Question 35

T or F X-Linked Dominant Traits More Female are affected due to the presence 2 X chromosomes.

Answer 35

True

Question 36

T or F X-Linked Dominant Traits Do not skip generation when expressed.

Answer 36

True

Question 37

T or F X-Linked Dominant Traits Mode Transmission: MOTHER TO SON and FATHER TO DAUGHTER.

Answer 37

False Mode Transmission: MOTHER TO SON/DAUGHTER and FATHER TO DAUGHTER.

Question 38

T or F X-Linked Dominant Traits 50% son/daughter of heterozygous mother.

Answer 38

True

Question 39

T or F X-Linked Dominant Traits If both parents have x-linked heterozygous dominant, all offspring will be positive for x-linked dominant.

Answer 39

False If both parents have x-linked HOMOZYGOUS dominant, all offspring will be positive for x-linked dominant.

Question 40

T or F X-Linked Recessive Traits More males are affected due to the presence 2 Y chromosomes.

Answer 40

False More FEMALES are affected due to the presence 2 X chromosomes.

Question 41

T or F X-Linked Recessive Traits If both parents have x-linked homozygous dominant, all offspring will be positive for x-linked dominant.

Answer 41

True

Question 42

- The only affected offspring is only males. - Mode of Transmission: FATHER TO ALL SONS. - It does not skip generation.

Answer 42

Y-linked Traits

Question 43

- All offspring is affected or at risk of acquiring traits. - Mode of Transmission: MOTHER TO ALL OFFSPRING.

Answer 43

Mitochondrial-Linked Traits

Question 44

guess the common autosomal traits whether which one's dominant/recessive a. window's peak b. no window's peak

Answer 44

a. dominant b. recessive

Question 45

guess the common autosomal traits whether which one's dominant/recessive a. no cheek dimples b. cheek dimples

Answer 45

a. recessive b. dominant

Question 46

guess the common autosomal traits whether which one's dominant/recessive a. no hitchhiker's thumb b. hitchhiker's thumb

Answer 46

a. dominant b. recessive

Question 47

guess the common autosomal traits whether which one's dominant/recessive a. face freckles b. no face freckles

Answer 47

a. dominant b. recessive

Question 48

guess the common autosomal traits whether which one's dominant/recessive a. attached earlobes b. free earlobes

Answer 48

a. recessive b. dominant

Question 49

guess the common autosomal traits whether which one's dominant/recessive a. cleft chin b. without cleft chin

Answer 49

a. dominant b. recessive