Podcast
Questions and Answers
What is the key difference between preformation and epigenesis?
What is the key difference between preformation and epigenesis?
- Epigenesis involves the organism simply growing larger, while preformation is a stepwise process.
- Preformation involves progressive organization, while epigenesis does not.
- Preformation believes all parts of an organism come into existence together, whereas epigenesis involves a stepwise process. (correct)
- Epigenesis begins with a complete miniature structure, while preformation does not.
Which theory of development believes that the organism develops from an unorganized state?
Which theory of development believes that the organism develops from an unorganized state?
- Mid 17th century development
- 18th century development
- Epigenesis (correct)
- Preformation
Who is considered the first embryologist according to the text?
Who is considered the first embryologist according to the text?
- Jonathan Slack
- Scott F Gilbert
- Aristotle (correct)
- Werner A Muller
Which model involves the belief that an organism is preformed as a complete miniature structure in the sperm or egg?
Which model involves the belief that an organism is preformed as a complete miniature structure in the sperm or egg?
In which century did the concept of preformation emerge?
In which century did the concept of preformation emerge?
Which book is referenced for further reading on Developmental Biology?
Which book is referenced for further reading on Developmental Biology?
How do cells in the embryo become organized into specific structures like organs?
How do cells in the embryo become organized into specific structures like organs?
What is the main question concerning morphogenesis?
What is the main question concerning morphogenesis?
During embryonic development, why do cells tend to become more restricted in their developmental potential?
During embryonic development, why do cells tend to become more restricted in their developmental potential?
How do our cells know when to stop dividing during embryonic development?
How do our cells know when to stop dividing during embryonic development?
What instructions are present in the nuclei and cytoplasm of the egg and sperm that give rise to a new organism?
What instructions are present in the nuclei and cytoplasm of the egg and sperm that give rise to a new organism?
How do changes in development result in the creation of new body forms according to evolution?
How do changes in development result in the creation of new body forms according to evolution?
What determines the sex of many reptiles according to the text?
What determines the sex of many reptiles according to the text?
Who was the first to observe the blastoderm of the chick embryo?
Who was the first to observe the blastoderm of the chick embryo?
Which animals undergo meroblastic cleavage?
Which animals undergo meroblastic cleavage?
Who was the first known individual to study comparative developmental anatomy?
Who was the first known individual to study comparative developmental anatomy?
What did Marcello Malpighi identify for the first time in chick development?
What did Marcello Malpighi identify for the first time in chick development?
Which scientist discovered the three germ layers in the chick embryo?
Which scientist discovered the three germ layers in the chick embryo?
Which group of animals are classified as deuterostomes?
Which group of animals are classified as deuterostomes?
What is the main difference between holoblastic and meroblastic cleavage?
What is the main difference between holoblastic and meroblastic cleavage?
What function did William Harvey suggest for the amniotic fluid?
What function did William Harvey suggest for the amniotic fluid?
In which organisms can holoblastic cleavage occur?
In which organisms can holoblastic cleavage occur?
Who transformed embryology into a specialized branch of science in collaboration?
Who transformed embryology into a specialized branch of science in collaboration?
In what year did William Harvey conclude that all animals originate from eggs?
In what year did William Harvey conclude that all animals originate from eggs?
Where does the primitive streak form during embryonic development in avian, reptilian, and mammalian embryos?
Where does the primitive streak form during embryonic development in avian, reptilian, and mammalian embryos?
Which structure in a chick embryo is analogous to the blastopore in a frog?
Which structure in a chick embryo is analogous to the blastopore in a frog?
What is the traditional term for the key induction process where the progeny of dorsal lip cells induce the dorsal axis and neural tube?
What is the traditional term for the key induction process where the progeny of dorsal lip cells induce the dorsal axis and neural tube?
Which experiment involves destroying a portion of an embryo and then observing the development of the impaired embryo?
Which experiment involves destroying a portion of an embryo and then observing the development of the impaired embryo?
In which experiment does one observe the development of the embryo after replacing an original part with a part from a different region of the embryo?
In which experiment does one observe the development of the embryo after replacing an original part with a part from a different region of the embryo?
What type of experiment involves replacing a portion of the embryo with a portion from a different embryo?
What type of experiment involves replacing a portion of the embryo with a portion from a different embryo?
