The Key Derived Character of the Lobe-Finned Fish Is

question 44

Multiple Choice

The key derived character of the lobe-finned fish is

• A)the lateral line system.
• B)the series of rod-shaped bones in their pectoral and pelvic fins.
• C)the operculum.
• D)the flattened scales covering their skin.

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Definitions:

Nuclear Envelope

Double membrane that surrounds the nucleus in eukaryotic cells and is connected to the endoplasmic reticulum; has pores that allow substances to pass between the nucleus and the cytoplasm.

Mitosis

A process of cell division that results in two genetically identical daughter cells developed from a single cell, ensuring that each daughter cell receives an exact copy of the parent cell's DNA.

Chromosomes

Structures within the cell nucleus made of DNA and protein, containing genes that are the blueprint for an organism's traits and functions.

DNA

A molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms and many viruses.