tiền tạo

Một nhà khoa học quan sát mô hình tiền tạo dưới kính hiển vi.

Definition

1. Noun:

   • Preformation: In biology and the history of science, "tiền tạo" refers to the theory that an organism develops from a miniature, fully formed version of itself that exists in the germ cell (sperm or egg). This is the doctrine of preformationism, contrasting with epigenesis.

2. Adjective:

   • Preformed: Describes a structure or characteristic that is already formed or present in a rudimentary state before its development or appearance.

Usage Examples

• Noun:
  • Thuyết tiền tạo từng là một quan điểm phổ biến trong phôi học cổ đại. (The theory of preformation was once a prevalent view in early embryology.)
• Adjective:
  • Các nhà khoa học nghiên cứu về các cấu trúc tiền tạo trong tế bào. (Scientists study preformed structures within the cell.)

Advanced Usage

• The term is almost exclusively used in scientific, historical, or academic contexts, particularly when discussing the history of biological theories or developmental biology.

Variants and Related Words

• Thuyết tiền tạo (n): The theory of preformation, preformationism.
  • Thuyết tiền tạo cuối cùng đã bị bác bỏ. (The theory of preformation was eventually disproven.)

Synonyms

• Preformationism: The biological theory.
• Preformed: Already formed.

Related Terms

• Epigenesis: The opposing theory that an organism develops progressively from an undifferentiated state.
• Embryology: The branch of biology that studies the development of embryos.