Question

Which of the following statements is the strongest argument in favor of two organisms, $A$ and $B,$ being closely related evolutionarily? a. $A$ and $B$ look alike. b. $A$ and $B$ live in the same ecosystem. c. $A$ and $B$ use the same metabolic pathways. d. The DNA sequences of A and B are highly homologous.

Name: Problem 19, Chapter 1: Biology for AP Courses
Uploaded: 2021-08-26T00:06:57-08:00
Duration: 1 min 23 s
Channel: Christina Sorrentino
Description: Which of the following statements is the strongest argument in favor of two organisms, A and B, being closely related evolutionarily? a. A and B look alike. b. A and B live in the same ecosystem. c. A and B use the same metabolic pathways. d. The DNA sequences of A and B are highly homologous.

   Which of the following statements is the strongest argument in favor of two organisms, $A$ and $B,$ being closely related evolutionarily?
a. $A$ and $B$ look alike.
b. $A$ and $B$ live in the same ecosystem.
c. $A$ and $B$ use the same metabolic pathways.
d. The DNA sequences of A and B are highly homologous.

Biology for AP Courses

Julianne Zedalis,…

Chapter 1, Problem 19

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Solved by Expert Christina Sorrentino

08/26/2021

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It is the process by which traits that enhance survival and reproduction become more common in successive generations of a population. This process is primarily concerned with genetics. Show more…

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Which of the following statements is the strongest argument in favor of two organisms, $A$ and $B,$ being closely related evolutionarily? a. $A$ and $B$ look alike. b. $A$ and $B$ live in the same ecosystem. c. $A$ and $B$ use the same metabolic pathways. d. The DNA sequences of A and B are highly homologous.

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Key Concepts

Homologous DNA Sequences

Homologous DNA sequences are regions of DNA that are similar between different organisms due to shared ancestry. They provide strong evidence of evolutionary relatedness because high sequence similarity often reflects a recent common ancestor and less time for independent accumulation of mutations.

Evolutionary Relationships

Understanding evolutionary relationships involves determining how organisms are related through common descent. Genetic information, especially DNA sequence data, offers a detailed record of evolutionary history, making it one of the most reliable indicators of relatedness among organisms.

Comparative Genomics

Comparative genomics is the study of the similarities and differences in the genome sequences of different species. This approach helps scientists trace evolutionary changes, identify conserved genes, and confidently infer phylogenetic relationships based on molecular evidence.

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