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Genetics > Ch 4 Epistasis - Exam Two! > Flashcards

Ch 4 Epistasis - Exam Two! Flashcards

1
Q

Define epistasis

A

masking or alteration of the gene expression of the alleles of one gene by allelic combinations of another

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2
Q

What are the five types of epistasis?

A

Recessive
Dominant
Complementation
Duplicate Gene Action
Suppression

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3
Q

What is the ratio for recessive epistasis?

A

9:3:4

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4
Q

What is the ratio for dominant epistasis?

A

12:3:1

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5
Q

What is the ratio for complementation epistasis?

A

9:7

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6
Q

What is the ratio for duplicate gene action epistasis?

A

15:1

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7
Q

What is the ratio for suppression epistasis?

A

13:3
(C-I- = white
C-ii = colored
ccI- = colored
ccii = colored)

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8
Q

What is the difference between sex influenced and sex limited genes?

A

limited is only in one sex
influenced is heavily swayed by sex

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9
Q

What is a sex linked gene?

A

A gene found on a sex chromosome

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10
Q

What is an example of a sex-limited gene?

A

Hen feathering

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11
Q

What is an example of a sex influenced gene?

A

pattern type baldness

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Genetics (9 decks)

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