GEGE2001 Weeks 05 & 06 (L09, L10, L11, L12)

Descripción

L09,L10,L11,L12 – Population Genetics
Michael Jardine
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Michael Jardine
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Resumen del Recurso

Pregunta 1

Pregunta
A population is polymorphic for a particular trait when the population has [blank_start]________[blank_end] phenotypes for that trait (each being >1%, so not ‘rare’).
Respuesta
  • more than 2
  • 2 or more

Pregunta 2

Pregunta
True or false: The frequency of an allele is determined [at least in part] by its dominance?
Respuesta
  • True
  • False

Pregunta 3

Pregunta
Based on the image above, what are the [at least expected] allele frequencies:
Respuesta
  • B = 0.2
  • B = 0.8
  • b = 0.2
  • b = 0.8
  • B = 0.04
  • b = 0.04
  • B = 0.64
  • b = 0.64

Pregunta 4

Pregunta
Based on the image above, what are the [at least expected] gene frequencies:
Respuesta
  • BB = 0.04
  • Bb = 0.16
  • bB = 0.16
  • bb = 0.64
  • Black = 0.36
  • Black = 0.64
  • Yellow = 0.64
  • Yellow = 0.36
  • B = 0.2
  • b = 0.8

Pregunta 5

Pregunta
Based on the image above, what are the [at least expected] phenotype frequencies:
Respuesta
  • B_ = 0.36
  • bb = 0.64
  • Black = 0.36
  • Black = 0.64
  • Yellow = 0.64
  • Yellow = 0.36
  • bb = 0.36
  • B_ = 0.64

Pregunta 6

Pregunta
True or False: Inbreeding results in the frequency of heterozygotes halving each generation.
Respuesta
  • True
  • False

Pregunta 7

Pregunta
True or False: Self-fertilisation results in the frequency of heterozygotes halving each generation.
Respuesta
  • True
  • False

Pregunta 8

Pregunta
The inbreeding coefficient (F) adjusts genotype frequencies of ( A1A1 : A1A2 : A2A2 ) from ( p^2 : 2pq : q^2 ) to ( p^2 + Fpq : 2pq – 2Fpq : q^2 + Fpq ). Thus if a population expected to be ( 9 : 42 : 49 ) is observed at ( 20 : 20 : 60 ), what is F? (...assume the only reason for the departure from expecteds is inbreeding)
Respuesta
  • 0.524
  • 0.2
  • 0.22
  • 20
  • 22
  • 11
  • 0.11
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