From a Scientific Perspective, Which of the Following Statements About

question 25

Multiple Choice

From a scientific perspective, which of the following statements about life elsewhere in the universe is best supported by current evidence?

• A) we have good evidence that life exists on many planets around other stars
• B) we only have evidence that life exists around three other stars
• C) the government has evidence (which it is not releasing) that there is at least one other intelligent life form on a planet orbiting another star
• D) while we have evidence of the building blocks of life elsewhere in the universe, we have no definite evidence about life around other stars at this time
• E) there is no evidence for intelligent life anywhere, even on Earth
• Section 30.2: Astrobiology

---

Definitions:

Genetic Variation

Genetic variation is the diversity in gene frequencies, resulting from mutations, genetic recombination, and other sources, providing the material for evolution and adaptation in populations.

Asexual Reproduction

A mode of reproduction that does not involve the fusion of gametes, leading to offspring genetically identical to the parent.

Genetically Identical Offspring

Offspring that share the same genetic material, typically as a result of asexual reproduction.

Genetic Recombination

The process by which pieces of DNA are broken and recombined to produce new combinations of alleles, contributing to genetic diversity.