Eukaryotic Genes Flashcards

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1
Q

What is the definition of a Gene?

A

a DNA segment that contributes to phenotype/function

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2
Q

What are the three Eukaryotic consensus sequences?

A
  • TATA Box
  • CAAT Box
  • GC Box
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3
Q

Describe the RNA polymerase binding site.

A
  • Promotor
  • Upstream of transcriptional start site
  1. Provide specificity
  2. Tell RNA polymerase where to start
  3. Indicates which strand will be transcribed and the direction of transcription
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4
Q

What is the role of spliceosome?

A

Remove Nuclear pre-mRNA introns

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5
Q

Differentiate the two types of introns

A

Group I/II -> Excise self with guanosine

Nuclear pre-mRNA introns: Use spliceosome

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6
Q

What is characteristic of Autosomal recessive traits?

A
  • appear equally in males/females
  • Skip generation s
  • More likely in progeny of related parents
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7
Q

What is characteristic of Autosomal Dominant?

A
  • Equally represented btwn sexes
  • Unaffected person do not transmit
  • Affected persons have at least one affected parent
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8
Q

What is characteristic of X lined Recessive?

A
  • Appear more in males
  • Affected males t4end to come from unaffected mothers
  • NEVER inherited from father
  • Skip generations
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9
Q

What is characteristic of X-linked dominant?

A
  • Do NOT skip generations
  • Affected males pass trait to ALL daughters and NO sons
  • Affected females pass trait to HALF of their offsprings (Male and female)

***More often in females

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10
Q

What is characteristic of Y linked traits?

A
  • Only males
  • Passes father - Son
  • All male offspring are affected
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