Which field studies embryos and developmental stages to inform evolutionary relationships?

Which field studies embryos and developmental stages to inform evolutionary relationships?

• A. Descent with modification
• B. Selective breeding
• C. Vestigial organs
• D. Embryology

Answer: (D)

Embryology examines how organisms develop from fertilized eggs, and comparing those embryonic stages across species reveals patterns that reflect shared ancestry. When vertebrate embryos display similar structures like pharyngeal arches and a post-anal tail early on, these developmental similarities point to a common evolutionary blueprint, even if adults diverge later. These comparative developmental traits help scientists infer evolutionary relationships and reconstruct how lineages are related. Other options describe broad evolutionary ideas, artificial selection, or features that have lost function, but they don’t focus on studying development across species to reveal connections the way embryology does.

Embryology examines how organisms develop from fertilized eggs, and comparing those embryonic stages across species reveals patterns that reflect shared ancestry. When vertebrate embryos display similar structures like pharyngeal arches and a post-anal tail early on, these developmental similarities point to a common evolutionary blueprint, even if adults diverge later. These comparative developmental traits help scientists infer evolutionary relationships and reconstruct how lineages are related. Other options describe broad evolutionary ideas, artificial selection, or features that have lost function, but they don’t focus on studying development across species to reveal connections the way embryology does.