Fifty years ago, genetic testing did not exist. If we wanted to prove whether someone was related, our best option was blood typing. Now, Elvis Presley was a wildly famous musician who died in 1977. Before his death, it was rumored he fathered a child with someone other than his wife whilst they were living in Hawaii. Prior to Elvis's death, this same woman would take her son to visit him there at least once a year. She also had blood tests done to prove Elvis was the father and tests showed it was possible. Her grandson is alive now, and looks very much like Elvis as you can see below. The grandson is on the left and Elvis is on the right. They have the same O+ blood type, sing beautifully, and both play the guitar. If you were using blood type to determine whether Elvis (whose blood type is O+) was the father of someone, which of these blood types would not have been possible for any of his children? Type A -
Type B +
Type O-
Type AB+

Why do you think the puppy litter was all dark-haired?

You decide that the introduction should also discuss the extremophiles that are referred to as the archaea. these single-cell organisms are considered "extremophiles" due to their ability to survive and reproduce in environmental conditions that would be hostile for most living organisms. archaea species have been isolated from highly acidic sulfur springs, ocean floor thermal vents with temperatures that exceed boiling, and subarctic ice well below freezing. while still considered to be prokaryotic, the archaea have numerous differences that place them apart from the bacteria. choose the characteristics that separate the archaea from other prokaryotic cells. select all that apply. view available hint(s) select all that apply. archaea lack true peptidoglycan in their cell walls. the morphology of the cell is rigid and is geometric in shape, similar to a sphere or cylinder. the cytoplasmic membrane lipids of archaea have branched or ringform hydrocarbon chains. all currently identified and characterized archaea have been linked as the causative agent to an animal or human disease.

This comparative chart is an example of one that might be used by scientists and law enforcement personnel for identification purposes. the chart represents a technological advance called