The Forelimbs of Tiktaalik Have Bones,but Are Fringed with Fins

question 2

Multiple Choice

The forelimbs of Tiktaalik have bones,but are fringed with fins instead of toes (Fig.20.57) .Which of the following is the best explanation for this observation?

• A)This is a transitional fossil, and the species has not yet lost its arm bones
• B)This is a common ancestor to all of the modern fish species that have bones in their forelimbs
• C)This is a common ancestor to all of the modern amphibian species that have fins on their forelimb
• D)This is a transitional fossil, and the species has not yet lost its fins
• E)This species was an evolutionary dead end, which is why no modern species have both bones and fins on their forelimbs

---

Definitions:

Automated Threat Assessments

The use of automated systems to evaluate and identify potential security threats without the need for manual intervention.

Machine Learning

is a branch of artificial intelligence that focuses on building systems that learn from data, automatically improving and adapting without being explicitly programmed.

Unethical Actions

Actions or behavior that violate moral or professional standards, often to gain personal or business advantage.

Right Or Wrong

A phrase often used to differentiate or decide between ethical or moral choices, implying a judgement of actions based on moral or legal standards.