Which of the Following Are Considered More Primitive Based Upon

question 38

Multiple Choice

Which of the following are considered more primitive based upon the structure of their limbs?

• A) bats
• B) reptiles
• C) porpoises
• D) penguins
• E) birds

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Definitions:

Anticodons

Sequences of three nucleotides in a transfer RNA molecule that are complementary to a specific codon in messenger RNA.

Codons

Sequences of three nucleotides in mRNA that specify a particular amino acid or a start/stop signal during protein synthesis.

Eukaryotic Cells

Complex cells with a nucleus and other organelles enclosed within membranes.

Cytoplasm

Region of a cell between the nucleus, or the nucleoid region of a bacterium, and the plasma membrane; contains the organelles of the cell.