Question

A Texas horned lizard (Phrynosoma cornutum) and a Texas bluebonnet (Lupinus texensis) are shown.

Texas horned Lizard. Texas. Bluebonnet.


DNA Nucleotide Sequence in Two Organisms.
Texas Horned Lizard. T. T. A., T. G. T., G. C. G., C. C. C., A. C. G., T. G. A., C. G. A., T. C. C., G. A. T.,
Texas Bluebonnet. G. T. A., A. T. G., C. A. G., T. G. C., C. A. C., C. G. T., G. C. T., G. A. A., T. C. A.,

These two DNA sequences best provide evidence that —
A
all organisms have an identical genetic sequence
B
the nucleotides making up the genetic code are common to all organisms
C
the Texas horned lizard eats the Texas bluebonnet
D
mutations occur randomly in the genetic code

Answer 1

B

Both sequences use the same four nucleotide bases (A, T, C, G). That shows the chemical components of the genetic code are common across different organisms, even though their actual sequences differ.