Question

Carlos learns that all living things have cells with the same system of genetic material. Scientists have concluded that this shows that all living things had a common ancestor.

Carlos finds this difficult to understand as he looks at pictures of a dog and snake. He cannot see many similarities between them, but what shows evidence of their common evolutionary past?

A. DNA
B. gene transfer
C. natural selection
D. endosymbiosis

Answer 1

A. ADN

Step-by-step explanation:

El ADN no logra copiarse con precisión

La mayoría de las mutaciones que pensamos que son importantes para la evolución suceden de forma natural. Por ejemplo, cuando una célula se divide hace una copia de su ADN y, algunas veces, esa copia no es perfecta. Esa pequeña diferencia con la secuencia de ADN original es una mutación.

Answer 2

It is A. DNA.. hope it helps :)