Last Updated
：2025/11/27
primitive streak
（ plural ）
Quizzes for review
(embryology) A formation that occurs during the initial phases of embryonic development in birds, reptiles and mammals.
音声機能が動作しない場合はこちらをご確認ください
See correct answer
primitive streak
The researcher examined the primitive streak under the microscope to study the origin of the germ layers.
See correct answer
The researcher examined the primitive streak under the microscope to study the origin of the germ layers.
音声機能が動作しない場合はこちらをご確認ください
English - English
Word Edit Setting
- Users who have edit permission for words - All Users
- Screen new word creation
- Screen word edits
- Screen word deletion
- Screen the creation of new headword that may be duplicates
- Screen changing entry name
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Sentence Edit Setting
- Users who have edit permission for sentences - All Users
- Screen sentence deletion
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Quiz Edit Setting
- Users who have edit permission for quizzes - All Users
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
