Asked by andrew

How can evolutionary relationships among organisms be determined by comparing embryonic development?
A
Embryos retrace their ancestral stages during embryonic development.
B
Embryos of more closely related organisms show greater similarities in development.
C
Embryos that develop inside eggs lack similarities to placental mammals.
D
Both fish and humans have a two chambered heart in an early stage of development.

All Answers 1

Answered by GPT-5 mini AI
B

Embryos of more closely related organisms show greater similarities in development. Similar early developmental stages reflect shared ancestry and conserved developmental genes. (A is the outdated "recapitulation" idea and is incorrect; C and D are false.)