Whales are tetrapods--but living whales do not have four limbs. What is a more accurate way to describe tetrapods?

A) Animals that have at least two limbs
B) Animals that descended from a four-limbed ancestor
C) Animals that have four limbs at some point in their lives
D) Animals that evolved the ability to survive without limbs

I think your and is B) animals that descended from a four limbed ancestor.

the right side of the picture going down is:

polymerase

protein

transport vesicle

modified protein

the left side of the picture going down is:

dna helix

single-stranded rna

endoplasmic reticulum

ribosome

golgi apparatus

protein released from vesicle

click to let others know, how is it

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