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Sex Determination & Sex Chromosomes 3 Flashcards

(11 cards)

1
Q

Male carries what type of sex chromosomes?

A

One X & one Y

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2
Q

Females carry what type of sex chromosomes?

A

Two X chromosomes

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3
Q

Autosomes

A

Chromosomes that are not sex chromosomes

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4
Q

Dosage compensation

A

When the level of expression of many genes on the sex chromosomes is similar in both sides

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5
Q

______________ is necessary in some species to ensure genetic equality between the sexes

A

Dosage Compensation

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6
Q

Dosage compensation happens in mammals when the female goes through _____________

A

X-chromosome inactivation (Turns off one of their X chromosomes)

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7
Q

Sex-linked genes

A

Genes found on only one sex chromosome but not both (ex. X-linked genes found only on X chromosome)

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8
Q

Pseudoautodomal genes

A

Found on both X & Y chromsomes

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9
Q

X-linked alleles

A

Genes that are physicall located within the x-chromosome

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10
Q

X-linked recessive

A

The allele causing the disease is recessive & located on the X-chromosome

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11
Q

Recipprocal cross

A

Where the sex & pheotype are reversed

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