Cold case detectives are investigating a homicide that took place 30 years ago. in reexamining the evidence, they find a tiny spot of blood on the victim’s clothing that was likely left by the murderer. the dna in the blood has partially degraded over time. what technique(s) would the blood lab technicians use in their examination of this tiny, degraded blood sample? select all that apply.
a) they would use a restriction enzyme and dna ligase to make recombinant dna from this sample.
b) they would use pcr to amplify the dna.
c) they would use reverse transcriptase-polymerase chain reaction (rt-pcr) to determine the genes expressed in this dna.

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit

Astudent completed a lab report. which correctly describes the difference between the "question" and "hypothesis' sections of her report? "question states what she is asking, and "hypothesis" states the result of her experiment "question" states what she is asking, and "hypothesis" states what she thinks the answer to that question is in 'if. then because" format. "question" describes what she is trying to find out, and "hypothesis" states the procedures and methods of data collection. "question" describes what she is trying to find out, and "hypothesis" states any additional information or prior knowledge about the question