Genetics exam 2: Inheritance and traits, Evans UARK

Question

Describe a Barr Body

Answer 1

They are intact X chromosomes which are highly condensed and transciptionally repressed.

Answer 2

They are intact X chromosomes which are lightly condensed and transcriptionally repressed.

Answer 3

They are intact Y chromosomes which are highly condensed and transcriptionally repressed.

Answer 4

X-chromosome inactivation can phenotypically cause this for X- linked genes to display a mosaic phenotype.

Answer 5

X-chromosome inactivation can phenotypically cause this for X- linked genes to display a mosaic phenotype. This can also occur in males with a XXY genotype.

Answer 6

Y-chromosome inactivation can phenotypically cause this for Y- linked genes to display a mosaic phenotype.

Answer 7

Homozygous

Answer 8

Heterozygous

Answer 9

Both Female and Heterozygous

Answer 10

Tortoiseshell pattern

Answer 11

Down syndrome

Answer 12

Siamese cat

Answer 13

Y-chromosome activation

Answer 14

X-chromosome inactivation

Answer 15

Down syndrome

Answer 16

Not a change in DNA sequence but a change in chromatin state.

Answer 17

A change in DNA sequence and a change in chromatin state.

Answer 18

Multiple gene sequences are cut out of the X-inactivation

Answer 19

Erased during Mitosis, and the chromosome is passed onto the progeny in its original, active state.

Answer 20

Erased during Meiosis, and the chromosome is passed onto the progeny in an altered state.

Answer 21

Erased during Meiosis, and the chromosome is passed onto the progeny in its original, active state.

Answer 22

Up to 25% of some x-linked genes in humans escape inactivation. This includes the genes within the pseudoautosomal regions (PARs) of the Y chromosomes.

Answer 23

Up to 75% of some x-linked genes in humans escape inactivation. This includes the genes within the pseudoautosomal regions (PARs) of the X and Y chromosomes.

Answer 24

Up to 25% of some x-linked genes in humans escape inactivation. This includes the genes within the pseudoautosomal regions (PARs) of the X and Y chromosomes.

Answer 25

Genes that are unique to the X chromosome are X-linked genes.

Answer 26

Genes that are unique to the Y chromosome are Y-linked genes.

Answer 27

Genes found on the sex chromosomes are sex-linked genes.

Answer 28

All are correct.

Answer 29

X-linked traits

Answer 30

Y-linked traits

Answer 31

Sex linked traits

Answer 32

X linked and is located on the x chromosome

Answer 33

Y linked and located on the Y chromosome

Answer 34

Sex independent

Answer 35

Hemizygous, Hemizygote

Answer 36

Heterozygous, Heterozygote

Answer 37

Homozygous, Homozygote

Answer 38

Heterozygous

Answer 39

Homozygous

Answer 40

Hemizygous

Answer 41

Sex linked

Answer 42

Heterozygosity

Answer 43

Homozygosity

Answer 44

Mitosis and daughter cell formation

Answer 45

Meiosis and gamete formation

Answer 46

Meiosis II and gamete formation

Answer 47

XY male parents normally cannot pass their X chromosome to male progeny

Answer 48

A male needs to receive only 1 recessive allele to display the recessive phenotype, but females need to receive 2 recessive alleles.

Answer 49

A heterozygous female for an X-linked trait can produce sons who display the recessive phenotype, regardless of her mate's X-chromosome genotype.

Answer 50

X-linked traits often deviate from Mendelian ratios

Answer 51

All are correct.

Answer 52

It effects females more often than males.

Answer 53

It effects males more often than females.

Answer 54

It equally effects males and females both.

Siguiente

Genetics exam 2: Inheritance and traits, Evans UARK

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Pregunta 19

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	Creado por Tehya Nash hace alrededor de 7 años