15. Comparative biochemistry is the science that examines similarities between m

Question

15. Comparative biochemistry is the science that examines similarities between molecules; the greater the me function in two different species, the more distantly difference between molecules that have the sa related the two species likely are. 16. With the advent of photosynthesis and the subsequent production of oxygen by photosynthetic organisms, most of the anaerobic organisms present on Earth became extinct because oxygen was actually toxic to these organisms. 17. Homo neanderthalensis is believed to be a direct ancestor of Homo sapiens.

Explanation / Answer

15. True. as the twk species are distantly related ., differences in theur DNA will be more and hence in the proteins or enzymes they code for. So it gives a vague idea about evolutionary relationships between two species

16. False. The anaerobic organisms have therir own mechanism systems of respiration.

17. No it is false. Homo sapiens and homo neanderthals co evolve from their common ancestors homo heidelbergenesis.

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