A couple is worried about having a child with a genetic disorder so they go to a genetic counselor. The counselor takes a sample of cells from their mouth to determine if there is a possibility of having a genetic disorder. Explain why they the sample from the mouth instead of simply looking at sperm or egg cells.

Which example would the nurse consider to be a part of systems thinking theory?

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above