What Is the Most Likely Explanation for a Group of Crocodiles

question 9

Multiple Choice

What is the most likely explanation for a group of crocodiles having acquired lower incubation temperatures giving rise to male crocodiles?

• A)Horizontal gene transfer from a related species has introduced changes in this group's genome
• B)Horizontal gene transfer from a related species has introduced changes in this group's proteome
• C)One or more mutations in the genome have been passed through the group by vertical descent
• D)One or more mutations in the proteome have been passed through the group by vertical descent

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