Topic 15 Flashcards

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1
Q

sex linkage

A

phenotypic expression of allele linked to the chromosomal sex of an induvidual

gene on X/Y/Z gene

ex there are 23 pairs in humans: 22 autosomes and 1 pair of sex chromosomes

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2
Q

transmission of traits on the different chromosomes

A

X, Z: transmit many traits

Y: rarely transmit traits

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3
Q

X-linked

A
  • muscle weakness
  • hemophilia (Xh)
  • tremor; invol mm. contractions
  • nephtritis, inflamm of kidneys
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4
Q

Z-linked

A

poultry only
- determine sex AFTER birth
- feather color and growth
(topic 18)

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