Question
The chart below shows three different stages of embryonic development for three different animal species.
Stages of Development in Three Animal Species
Which of the following provides the best evidence to support the idea that all of these species share a distant common ancestor?
A.
All of the embryos will continue to grow until they eventually reach adulthood.
B.
All of the embryos appear to have similar structures during their earliest stage of development.
C.
All of the embryos are very small during their early stages of development.
D.
All of the embryos experience significant changes in their structure as they grow and develop.
Stages of Development in Three Animal Species
Which of the following provides the best evidence to support the idea that all of these species share a distant common ancestor?
A.
All of the embryos will continue to grow until they eventually reach adulthood.
B.
All of the embryos appear to have similar structures during their earliest stage of development.
C.
All of the embryos are very small during their early stages of development.
D.
All of the embryos experience significant changes in their structure as they grow and develop.
Answers
GPT-5 mini
B
Similar structures in early embryonic stages (such as tail structures or pharyngeal pouches) indicate conserved developmental programs and homologous traits, which is strong evidence of a shared distant ancestor.
Similar structures in early embryonic stages (such as tail structures or pharyngeal pouches) indicate conserved developmental programs and homologous traits, which is strong evidence of a shared distant ancestor.