Question

after returning to the lab with the fossils, the researchers used to determine the age of the fossils. the results indicated they were approximately 40,000 years old. during that period in time, both lived in this region of italy. one of the fossils appeared to have a chin, indicating it may be a but it also had prominent brow ridges which made it look like a. the samples were limited and not in good shape, so the researchers decided to extract, which would also tell them if the was a modern human or neanderthal. mtdna mother homos sapiens and homo habilis nuclear dna neanderthals homo sapiens and homo neanderthalensis neanderthal radiocarbon dating modern human relative dating father

Explanation:

Step1: Determine the dating method

Radiocarbon dating is used to date fossils. So the first blank is "radiocarbon dating".

Step2: Identify the species

During the period when fossils are about 40,000 years old, Homo sapiens and Neanderthals (Homo neanderthalensis) lived in Europe. So the second blank is "Homo sapiens and Homo neanderthalensis".

Step3: Identify the modern - human - like feature

A chin is a feature of Homo sapiens (modern humans). So the third blank is "modern human".

Step4: Identify the Neanderthal - like feature

Prominent brow ridges are a feature of Neanderthals. So the fourth blank is "Neanderthal".

Step5: Determine the genetic material

Nuclear DNA contains more genetic information and can be used to distinguish between different species more accurately than mtDNA. So the fifth blank is "nuclear DNA".

Step6: Identify the subject of determination

The researchers want to know if the fossil (individual) is a modern human or Neanderthal. So the sixth blank is "individual".

Answer:

radiocarbon dating, Homo sapiens and Homo neanderthalensis, modern human, Neanderthal, nuclear DNA, individual