What three types of evidence allows us to determine whether organisms shared a common ancestor?

1 answer:

6 0

The evidence of common ancestry is based on study of three parameters; fossils record, homologies of various organisms, and study of biogeography. Fossils record determines the similarity and differences of bones as well as shells of different organisms over a given period of time. On the other hand, studying of homologies involves assessment of mitochondrial DNA and other proteins with an aim of finding similarity from one organism to another. Finally, Biogeography is the assessment of how continental drift might have separated organisms which had got common ancestry and they were living together.

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In at least 200 words explain how DNA replicates

Anuta_ua [19.1K]

Answer: Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin. Several enzymes and proteins then work together to prepare, or prime, the strands for duplication. Finally, a special enzyme called DNA polymerase organizes the assembly of the new DNA strands. The following description of this three-stage process applies generally to all cells, but specific variations within the process may occur depending on organism and cell type.

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Muscle soreness associated with strenuous exercise is at least partly due to

34kurt

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Anaerobic respiration resulting in oxygen debt, due to lactic acid accumulation.

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After strenuous muscle activity extra oxygen is needed to re-convert lactic acid into glucose and ATP. As you exercise the liver anaerobically converts glucose to lactic acid and carbon dioxide this results in oxygen debts that needs to be repaid later.

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In humans, random mating is most likely to occur for which of the following characteristics? Select one:B. personality C. physic

Andre45 [30]

Intelligence is most likely to be the criteria for random mating in humans.

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If random mating is taking place on the conditions that no evolution is taking place the genetic pool will be maintained through generations.

Random mating will be based on intelligence in humans because this is the trait which gets exhibited only when showcased otherwise remains hidden while other characters like personality, appearance and athleticism are phenotypically expressed character.

Random mating is not under the influence of genotype. Intelligence is a trait which needs to be more in human as random mating takes genotype frequency in consideration.

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