31 Questions
What is the focus of developmental biology?
Studying biological form changes over time
In developmental biology, what does 'commitment of cells' refer to?
The potential to develop into different cell types
What is the main difference between plant and animal development?
Plants have fixed cell commitment while animals do not
Which level of complexity does developmental biology study?
Levels ranging from molecular to organismal
What is the primary focus of model organisms in developmental biology?
Studying embryo and postnatal processes
What is the term for the diagram that maps larval or adult structures onto the region of the embryo from which they arose?
Fate map
Which of von Baer’s laws states that less general characters develop from the more general, until finally the most specialized appear?
Second law
Which of the following is a characteristic of a fate map?
It maps larval or adult structures onto the region of the embryo from which they arose
What is the term for an organism developing from a fertilized egg through developmental events?
Epigenesis
What does the first law of von Baer state?
The general features of a large group of animals appear earlier in development than do the specialized features of a smaller group
What is the term for an organism developing from a fertilized egg, containing a complete miniature adult (homunculus)?
Preformationism
Which cellular process does not contribute to morphogenesis?
Changes in cell membrane composition
According to von Baer's laws, what does the third law state about the early embryo of a higher animal?
It departs more and more from lower animals
What is the term for a direct observation diagram that maps larval or adult structures onto the region of the embryo from which they arose?
Fate map
What characteristic does von Baer’s first law describe?
The general features of a large group of animals appear earlier in development than do specialized features of a smaller group.
Which process does developmental biology primarily focus on?
Embryonic development
What concept does developmental biology prioritize over specific morphological features?
Gene expression
In developmental biology, what do model organisms mainly study?
Biological form changes
What characterizes the primary focus of developmental biology?
Processes and concepts
Which level of complexity does developmental biology primarily emphasize in its studies?
Molecular
What is the main focus of developmental biology in relation to cell behavior?
Cell differentiation mechanisms
Which of the following is NOT a factor considered in developmental biology for selecting model organisms?
Cellular Processes of Morphogenesis
What does the concept of epigenesis in developmental biology refer to?
Organism develops from fertilized egg through developmental events
According to Von Baer’s second law, what develops from the more general characters until finally the most specialized ones appear?
Cell Death
What characteristic distinguishes fate maps in developmental biology?
They map larval or adult structures onto the region of the embryo from which they arose.
In developmental biology, what does Von Baer’s third law emphasize about the early embryo of a higher animal?
It departs more and more from the early embryo of lower animals.
Which cellular process is not a typical contributor to morphogenesis in developmental biology?
Cell Division
According to developmental biology, what is the primary focus of von Baer’s laws?
Pattern Formation
What does direct observation involve in developmental biology?
Mapping larval or adult structures onto the region of the embryo from which they arose.
What is one significant factor considered in developmental biology for selecting model organisms?
The ease of experimental manipulation.
What is NOT a focus area for developmental biology?
Biochemistry and Molecular Biology of Plants
Test your understanding of the principles of developmental biology with this quiz. Covering topics such as organization, patterning, and comparing plant and animal development, this quiz will help you solidify your knowledge.
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