14287919
Descripción
Test por Michael Jardine, actualizado hace más de 1 año
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Creado por Michael Jardine
hace casi 6 años
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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
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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
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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
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0.22
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20
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22
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11
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0.11
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