DNA Flashcards

1
Q

Características de la estructura

A

Antiparalelo
Complementario
Formada por nucleótidos
Doble cadena
Giro helicoidal

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2
Q

Ley de Chargaff

A

[A] = [T]
[C] = [G]

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3
Q

Variantes de la cadena de DNA

A
  • Forma A
  • Forma B
  • Forma Z
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4
Q

Forma deshidratada del DNA (in vitro)

A

Forma A

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5
Q

Forma del DNA cromosómico

A

Forma B

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6
Q

Forma Z del DNA

A

Secuencias de purinas y pirimidinas alternadas, repeticiones de CG, regulación génica

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7
Q

Punto de origen para romper el DNA

A

Adenina - Timina

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8
Q

Tipos de Histonas

A

H1
H2 (H2A y H2B)
H3
H4

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9
Q

Histona que hace la función de “seguro”

A

H1

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10
Q

Histonas que se juntan para formar dímeros

A

H3 y H4
H2A y H2B

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11
Q

¿Cuánto mide el DNA?

A

2nm

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12
Q

¿Cuánto mide la fibra de nucleosomas?

A

10nm

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13
Q

¿Cuánto mide la fibra solenoide?

A

30nm

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14
Q

¿Cuánto miden los bucles de solenoide?

A

300nm

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15
Q

¿Cuánto mide la fibra (cromatina condensada)?

A

700nm

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16
Q

¿Cuánto mide el cromosoma?

A

1400nm