Chordates and Vertebrates NEET 2026: Human Origins

Where and when did Homo sapiens emerge in this question?

The official answer is D: Statement I is false and Statement II is true. In the chordates and vertebrates neet 2026 question, African origin, not Australian origin, is the decisive fact.

The supplied question is from NEET UG 2026, held on 21 June 2026, Code-50. The question bank classifies it as medium difficulty, not NTA. Its archive category is Diversity in Living World → Chordates and Vertebrates, but the required facts come from NCERT Class 12 Biology, Evolution.

Evaluate both claims:

• Statement I: Modern humans first emerged in Australia, then dispersed to other continents.
• Statement II: Homo sapiens emerged within 75,000–10,000 years ago.

The options are:

Why is the Australian-origin statement false?

The supplied NCERT-based solution identifies Africa, not Australia, as the origin of modern Homo sapiens. It then describes migration across continents, replacing other hominids. Statement I contains a wrong birthplace alongside a correct reference to later movement.

Split the statement before judging it:

• Origin claim: Modern humans arose in Australia. This conflicts with the African origin given in the solution.
• Movement claim: Modern humans subsequently spread across continents. This agrees with the solution.

The decisive comparison is Australia in the question versus Africa in NCERT. Accepting the migration claim does not make the origin claim correct.

Migration cannot rescue the wrong birthplace. Statement I is false, so eliminate A and C, both of which require it to be true.

Why does the supplied key accept 75,000–10,000 years ago?

Statement II is true under the supplied official solution, which connects 75,000–10,000 years ago with NCERT’s account of Homo sapiens emerging during the ice age. This verdict belongs to the textbook account used by this question, not an independently established modern fossil date.

The older boundary is 75,000 years ago; the more recent boundary is 10,000 years ago. Their difference gives the width of the stated interval:

That width is not the lifespan of the species. The statement does not say that Homo sapiens disappeared 10,000 years ago.

Evaluate the emergence interval separately from the origin claim. Do not add an extinction claim that neither Statement II nor the supplied solution makes.

How do the two verdicts give option D?

Statement I is false and Statement II is true, which maps directly to D. Reject B because it incorrectly marks Statement II false.

• A fails: It accepts the false Australian-origin claim.
• B fails: It rejects the accepted emergence interval.
• C fails: It reverses both established verdicts.
• D survives: It rejects I and accepts II.

Although the bank labels this Assertion and Reason, the displayed options test only whether each statement is correct. There is no “reason explains assertion” test: assess the statements independently. Check origin, check interval, then match the truth pair.

How can confusing migration with origin lead to option A?

Option A follows if you accept Statement I because its migration clause sounds familiar, without checking “Australia”. That shortcut treats a partly correct statement as entirely correct.

The faulty route is specific: you recognise that humans spread across continents, mark I true, and correctly mark II true. The resulting pair is “both true”, so you choose A.

The error is not necessarily forgetting migration. It is treating familiarity with one clause as proof that every claim is correct.

Repair the method by underlining the place of origin and the time interval, then checking each against NCERT independently. “Arose in Africa” describes origin; “later migrated elsewhere” describes dispersal. Origin and destination are not interchangeable: later movement cannot establish where the species first arose.

Which three Evolution questions can you use to check this method?

Use these three original practice questions to check origin, interval meaning and species-date matching independently. They are not additional NEET past-paper questions. All three stay within Evolution, the source chapter needed to solve this question.

Which origin-and-dispersal sequence agrees with the supplied account?

African origin followed by dispersal is correct. The supplied solution names Africa as the birthplace of modern humans.

Practice 1, original: Choose between African origin followed by dispersal and Australian origin followed by dispersal.

Both alternatives mention movement, so that shared clause cannot decide the answer. Check the birthplace independently: Australia makes the second sequence false even though dispersal is correct.

Does the later boundary mean Homo sapiens disappeared?

No. It marks an emergence interval in this account, not disappearance. The statement concerns when the species arose under the supplied NCERT-based key.

Practice 2, original: Does 75,000–10,000 years ago represent an emergence interval, or does it mean Homo sapiens disappeared at the later boundary?

An endpoint in the stated interval does not become an extinction date. Check what event the dates describe before judging the claim.

Which dates belong to Homo sapiens and Homo erectus?

Homo sapiens matches 75,000–10,000 years ago in this NCERT account; Homo erectus matches approximately 1.5 million years ago in the supplied solution.

Practice 3, original: Match Homo sapiens and Homo erectus with 75,000–10,000 years ago and approximately 1.5 million years ago.

Identify the species before accepting its date. Assigning the earlier Homo erectus date to Homo sapiens creates a separate factual error, even if Africa is correctly identified.

For another Evolution distinction, read Adaptive Radiation NEET 2026: Why Convergence Is Correct. Before moving on, cover these answers and write one sentence rejecting each incorrect alternative.