Question

The striking molecular similarities that exist between Earth's many diverse species can best be explained by A. random changes that occur separately in each species' genetic code. B. the sharing of common ancestors within the species' evolutionary history. C. the inability of the species to undergo evolutionary change over time. D. species mating with other species to produce offspring.

Answer 1

Answer: Option B

Step-by-step explanation:

There are many different types of organism that is related to each other. Some of the organisms have been evolved from other organisms.

Two organism are said to be similar because the organism are closely related to each other. They have more recent common ancestors.

The characters in the organism are similar because they are related to each other by their ancestry.

Answer 2

B

Step-by-step explanation:

While we may have many species on earth, they all share a common ancestor known as the cenancestor. Even when comparing the genomes of many different species on earth, these are a number of genes (approximately 300) that have been conserved throughout these species some of these being associated with cellular respiration and central dogma.