Choose the FALSE statement: A)The Hox genes represent an example of genes that code for process...

Choose the FALSE statement:

A)The Hox genes represent an example of genes that code for process rather than product; their significance to the Cambrian explosion is that bilateral symmetry did not have to evolve independently in each animal group, rather all Cambrian phyla could evolve quickly based on this homology.

B) The Galapagos finches represent an example of microevolutionary change; recent evidence has shown that such changes occur much faster than Darwin ever imagined.

C) Modern molecular biology has shown that macroevolutionarychange occurs very slowly in nature because it involves the accumulation of many mutations and novel genes, gradually yielding new, genetically unique forms in a step-by-step fashion over long periods of time.

Expert Solution

(A) The HOX gene or homebox gene is responsible for involvement in the body part plan of an embryo like the head to tail, body axis of any animal so the HOX gene is not involved with the Cambrian explosion is that bilateral symmetry did not have to evolve independently in each animal group, rather all Cambrian phyla could evolve quickly based on this homology.So this statement is FALSE.So this option is correct.

(B) The microevolution occurs over time due to the allele frequency,and this change in the gene or this type of mutations happens in very short time.So this statement is correct.So this option is wrong.

(C) The macroevolution happens due to the changes slowly occurs in the nature (Natural selection) and accumulation of mutation on many novel genes so this type of mutations takes more longer time period than the microevolution.So this statement is correct.So this option is wrong.

The correct answer is- (A)

gladiator answered 2 years ago

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