Which of the following best demonstrates the unity among all organisms? a. emergent properties b. descent with modification c. the structure and function of DNA d. natural selection

Verified step by step guidance

1. Identify the key concept: The question asks which option best demonstrates the unity among all organisms, meaning the commonality or shared characteristic that all living organisms possess.
2. Analyze the options: a) Emergent properties refer to complex systems and properties that arise from the interaction of simpler elements, not necessarily shared by all organisms. b) Descent with modification refers to the process of evolution and how species change over time, which implies diversity rather than unity. d) Natural selection is a mechanism of evolution, explaining how organisms adapt and evolve, focusing on differences that lead to survival.
3. Focus on the correct option: c) The structure and function of DNA. DNA is the genetic material found in all living organisms and is responsible for heredity and guiding the development, functioning, and reproduction of all life forms.
4. Understand why DNA demonstrates unity: DNA's structure as a double helix and its function in storing and transmitting genetic information are universal among organisms. This shared characteristic underlines a fundamental unity, as all organisms use DNA to carry genetic information.
5. The structure and function of DNA, as it is a fundamental and universal component in all living organisms, demonstrating the unity among them.

Key Concepts

Unity of Life

The unity of life refers to the shared characteristics and common ancestry of all living organisms. Despite the vast diversity in form and function, all organisms exhibit fundamental similarities at the molecular, cellular, and genetic levels, which highlight their evolutionary connections.

Descent with Modification

Descent with modification is a key principle of evolution, suggesting that species change over time through the process of natural selection and genetic variation. This concept explains how all organisms are related through common ancestors, adapting to their environments while retaining core biological traits.

Structure and Function of DNA

DNA is the molecular blueprint for all living organisms, containing the genetic information necessary for growth, development, and reproduction. The structure of DNA, with its double helix formation, is conserved across species, underscoring the unity among diverse life forms and their shared evolutionary heritage.