Scientists have discovered several species of insect that all contain the DNA sequence ATTACGCGATC on their second chromosome. What does this evidence suggest? Choose the correct answer.

EVIDENCE FOR EVOLUTION

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	similar feeding habits
B	susceptibility to habitat loss
C	genetic basis of photosynthesis
D	common ancestry among organisms

Explanation:

Detailed explanation-1: -Mutations are the source of all completely new, unique traits for living organisms. Scientists have discovered several species of insect that all contain the DNA sequence ATTACGCGATC on their second chromosome. This evidence suggests a common ancestry among organisms.

Detailed explanation-2: -DNA and the genetic code reflect the shared ancestry of life. DNA comparisons can show how related species are.

Detailed explanation-3: -That two species and their common ancestor have similar DNA is strong evidence supporting evolution. Protein amino acid sequences can also be used to compare similarities between species. Proteins are made from amino acids and the sequence of these amino acids is controlled by genes.

Detailed explanation-4: -Evidence for evolution: anatomy, molecular biology, biogeography, fossils, & direct observation.

Detailed explanation-5: -Fossils, anatomy, embryos, and DNA sequences provide corroborative lines of evidence about common ancestry, with more closely related organisms having more characteristics in common. DNA underlies the similarities and differences in fossils, anatomy, and embryos.

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