11.
Which of the following is FALSE:
a. Neanderthals and Homo sapiens coexisted
b. Neanderthals and Homo sapiens mated
c. Some living humans have Neanderthal ancestors
d. All living humans have Neanderthal ancestors

The FALSE statement is: d. All living humans have Neanderthal ancestors. Most non‑African populations carry Neanderthal DNA, but this is very low or nearly absent in some sub‑Saharan African lineages, so “all” is incorrect.​

Correct Answer and Explanation

Correct option (FALSE): d. All living humans have Neanderthal ancestors
Genomic studies show that present‑day non‑sub‑Saharan populations typically carry about 1–2% Neanderthal DNA, indicating Neanderthal ancestry in these groups. However, many sub‑Saharan African populations have extremely low or no direct Neanderthal admixture, except where there is Eurasian back‑migration. Therefore, it is wrong to say “all living humans” have Neanderthal ancestors, making option d the FALSE statement.​

Option‑wise Analysis

a. Neanderthals and Homo sapiens coexisted

This statement is true. Evidence from Europe and the Near East shows that Neanderthals and anatomically modern humans overlapped in time and space for several thousand years, roughly between about 50,000 and 40,000 years ago in many regions. Radiocarbon dating of sites across Europe indicates that both groups were present simultaneously, giving ample opportunity for cultural contact and gene flow.​

b. Neanderthals and Homo sapiens mated

This statement is true. High‑coverage Neanderthal and modern human genomes reveal clear signals of interbreeding (admixture), with distinct Neanderthal DNA segments present in modern Eurasian genomes. Analyses estimate that Neanderthals interbred with modern humans for roughly 7,000 years starting around 50,000 years ago, leaving a lasting genetic legacy.​

c. Some living humans have Neanderthal ancestors

This statement is true. All present‑day non‑sub‑Saharan populations (Europeans, East Asians, many South Asians, Native Americans, etc.) carry Neanderthal ancestry at around 1–2% on average, with East Asians often slightly higher. Recent work also shows detectable Neanderthal DNA in many African populations, largely due to back‑migration from Eurasia and complex gene flow, so “some living humans” clearly do have Neanderthal ancestors.​

d. All living humans have Neanderthal ancestors

This statement is false. While new methods reveal that Neanderthal ancestry may be more widespread than once thought, the level in many sub‑Saharan Africans is extremely low and often explained by later Eurasian back‑migration rather than direct widespread Neanderthal admixture. In exam logic, the key point is that Neanderthal admixture is not universal and not equal in all populations, so the absolute word “all” makes this statement incorrect compared to the others.​

Introduction

Understanding the relationship between Neanderthals and Homo sapiens is a frequent topic in competitive exam MCQs, especially in evolution and human ancestry sections. This question tests concepts such as coexistence, interbreeding, and how Neanderthal DNA persists in modern human populations, which are central to the “Neanderthals and Homo sapiens MCQ” theme.