Welcome to the Quiz!
This quiz contains 10 questions from a mix of 1 subtopics.
Which of the following best describes a body plan?
the developmental stages of an organism
the basic structured arrangement of an organism's parts
the genetic makeup of an organism
the behaviour of an organism
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Which of the following is true about homeobox genes?
they are a group of regulatory genes with a conserved DNA sequence
they guide the development of body plans
they contain homeobox sequences essential for the correct positioning of body parts
all of the above
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What does the homeodomain, encoded by the homeobox sequence, operate as?
an enzyme
a hormone
a transcription factor
a structural protein
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How do Hox genes control the development of body plans?
by modifying the transcription of proteins necessary for development
by controlling the behaviour of the organism
by directly building the body structures
by determining the genetic makeup of the organism
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Which of the following is NOT controlled by Hox genes during development?
the number of body layers
the symmetry of the body
the colour of the organism
the position and development of limbs and eyes
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Why are homeobox genes highly conserved?
mutations in homeobox genes would have large effects on the organism's body plan
not many other genes would be affected by a mutation in a homeobox gene
mutations in homeobox genes are likely to be beneficial and selected for
all of the above
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Which processes work together to refine body morphology during development?
cell death and cell division
cell specialisation and cell migration
cell differentiation and cell renewal
all of the above
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Which of the following is an example of an internal stimulus that regulatory genes can respond to?
DNA damage
lack of nutrients
light intensity
changes in temperature
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What is the primary role of Hox genes in animal development?
determining the colour of the organism
controlling the behaviour of the organism
controlling the development of body plans
regulating the immune system
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Which of the following is an example of an external stimulus that regulatory genes can respond to?
stress
DNA damage
hormones
changes in temperature
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