Question

Which of the following are techniques besides molecular clocks used by scientist to calculate the rate at which a stretch of DNA changes? (Choose all that apply)
•comparison of human behaviors
•carbon dating of fossils
•comparison of blood proteins
•comparison of homologous structures

Answer 1

Answer:

B and D

Explanation:

Human behaviors do not affect the entire evolution of every lifeform that has existed, therefore, A is FALSE

Carbon dating is commonplace in figuring out how old a lifeform could be, therefore, B is CORRECT

Blood proteins are commonly known to not last long and decompose fast, so fossilization of blood tends to not happen, plus it's next to impossible to tell what species had that genetic data, therefore, C is FALSE

For D, I kinda forgot most of my explanation, but I remember that it's correct, as I got the question correct on the assignment.

Answer 2

The carbon dating of fossils and comparison of homologous structures are techniques besides molecular clocks used by scientist to calculate the rate at which a stretch of DNA changes.

So, option B and D are correct one.

Human behaviors do not affect the entire evolution of life of organism that has existed, therefore, A is FALSE

Carbon dating is commonplace in figuring out how old a life of any organism, therefore, B is CORRECT

Blood proteins are commonly known to not last long and decompose faster, so fossilization of blood tends to not happen, plus it's next to impossible to tell what species had that genetic data, therefore, C is FALSE

By comparing of homologous structures we determine nucleotide sequence exchanged between two similar or identical molecule of DNA. So, option D is correct

What is Carbon dating?

• It is also referred as radiocarbon dating.

• It is the method used to determine the age of the living organism containing organic( carbon ) based material by using isotopes of carbon which is radioactive.

Learn about carbon dating

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