12 Questions
What is the process by which a zygote develops into a complex multicellular organism?
Development
What is the starting point for development in most animals?
Zygote
What is the term for the series of modifications that occur in a species over time?
Evolution
What is the term for the series of stages that an animal goes through from zygote to adult?
Ontogenetic Trajectory
What is the term for a type of asexual reproduction in which an offspring is produced from an unfertilized egg cell?
Parthenogenesis
How do evolution and development relate to each other?
They are very closely linked
What is the significance of trajectories in relation to evolution?
They are the result of prior evolution from earlier forms
What is the relationship between evolution and development according to the text?
Evolution begets development, and development begets evolution
What is heterochrony in the context of evolution and development?
A change in the ontogenetic sequence or trajectory
What was the main difference between preformationists and epigeneticists?
Preformationists believed in a pre-formed adult, while epigeneticists believed in a guided developmental process
What determines the kind of animal that the developmental process will build?
The structural genes and their DNA sequences
What are the broadly defined stages of development that are common to most animals?
Zygote, cleavage, gastrulation, organogenesis, and growth
Learn about the two processes that shape an animal's life: evolution, which brings about modifications over time, and development, which transforms a zygote into a fully formed individual. Understand the role of natural selection and the journey from a unicellular zygote to an independent individual.
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