PATHOLOGY

PATHOLOGY MCQ

GENETICS AND DISEASE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What explains the presence in living humans of DNA sections which are identical to DNA found in Neandrathals who lived 40, 000 years ago?
A
genetic mutation
B
inheritance
C
adaptation
D
speciation
Explanation: 

Detailed explanation-1: -Research has found links between Neanderthal DNA and fertility, how people feel pain and immune system functionality. Neanderthal DNA may affect skin tone and hair color, height, sleeping patterns, mood and even addiction in present-day Europeans.

Detailed explanation-2: -An analysis of the genetic variation showed that Neanderthal DNA is 99.7 percent identical to present-day human DNA, and 98.8 percent identical to chimpanzee DNA.

Detailed explanation-3: -Findings. The researchers recovered ancient DNA of Neanderthals by extracting the DNA from the femur bones of three 38, 000 year-old female Neanderthal specimens from Vindija Cave, Croatia, and other bones found in Spain, Russia, and Germany.

Detailed explanation-4: -Approximately 20 percent of Neanderthal DNA survives in modern humans; however, a single human has an average of around 2% Neanderthal DNA overall with some countries and backgrounds having a maximum of 3% per human.

There is 1 question to complete.