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Genetics and evolution

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Question 21

Homeobox genes are regulatory genes that play a critical role in coordinating developmental patterns.

Which of the rows in the table below correctly describes the conservation, function, and typical mutation effects of homeobox genes?

Sequence conservationProtein product functionResult of mutation
AHighly conserved across kingdomsActs as a transcription factorCan cause homeotic transformation
BHighly conserved across kingdomsActs as a ribosomal proteinHas no phenotypic effect
CHighly unique to individual speciesActs as a transcription factorCan cause homeotic transformation
DHighly unique to individual speciesWorks as a metabolic enzymePrevents synthesis of amino acids

Row A

Row B

Row C

Row D

Genetics and evolution Questions

  1. A Level
  2. /Biology
  3. /Genetics and evolution