OBJECTIVE FORESTRY

FORESTRY

PLANT AND WOOD ANATOMY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why do scientists think related species have similar body structures and developmental patterns?
A
the species inherited many of the same genes from each other
B
the species inherited many of the same proteins from each other
C
the species inherited all of the same genes from a common ancestor
D
the species inherited many of the same genes from a common ancestor
Explanation: 

Detailed explanation-1: -Species may share similar physical features because the feature was present in a common ancestor (homologous structures). Molecular biology. DNA and the genetic code reflect the shared ancestry of life. DNA comparisons can show how related species are.

Detailed explanation-2: -Homologous features If two or more species share a unique physical feature, such as a complex bone structure or a body plan, they may all have inherited this feature from a common ancestor. Physical features shared due to evolutionary history (a common ancestor) are said to be homologous.

Detailed explanation-3: -Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor.

Detailed explanation-4: -Homologous structures If two or more species share a unique physical trait they may all have inherited this trait from a common ancestor. Traits that are shared due to common ancestry are homologous structures. The similar bone arrangement of the human, bird, and whale forelimb is a structural homology.

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