Master NEET Zoology with topic-wise questions. Tailored for NEET students, these questions strengthen your Biology preparation.
The process of parthenogenesis involves the development of an organism from an unfertilized egg. Which statement is TRUE regarding the genetic makeup of an organism produced through parthenogenesis?
It is genetically identical to the mother, except for any mutations that may have occurred.
It inherits half its chromosomes from the mother and half from the father.
It is genetically distinct from both the mother and the father.
It inherits all its chromosomes from the father.
The 'Taung Child' fossil, discovered by Raymond Dart, is significant because it provided evidence for which of the following hypotheses regarding human evolution?
Large brain size was the primary driver of early hominin evolution.
Bipedalism preceded significant brain enlargement.
Tool use developed before bipedalism.
Early hominins originated in Asia.
Which of the following hominin characteristics is considered LEAST likely to be a direct adaptation to a savannah environment?
Bipedalism
Reduced body hair
Increased cranial capacity
Development of sweat glands
The 'Out of Africa' hypothesis for the origin of modern humans is primarily supported by evidence from which field of study?
Comparative anatomy
Paleoclimatology
Molecular genetics (mtDNA and Y-chromosome analysis)
Linguistics
Which hominin species is associated with the first definitive evidence of controlled use of fire?
Australopithecus afarensis
Homo habilis
Homo erectus
Homo neanderthalensis
The development of which anatomical feature is MOST closely linked to the evolution of language in hominins?
Enlarged brow ridges
Descended larynx
Increased prognathism
Reduced sagittal crest
The 'multiregional hypothesis' for the origin of modern humans proposes which of the following?
Homo sapiens evolved solely in Africa and then replaced all other hominin populations worldwide.
Homo sapiens evolved simultaneously in different regions from earlier hominin populations, with gene flow maintaining species cohesion.
Neanderthals were the direct ancestors of modern humans.
Homo erectus never left Africa.
The evolutionary history of a species can be elucidated through phylogenetic analysis. Which of the following statements regarding phylogenetic relationships is INCORRECT?
Shared derived characteristics can be used to define clades.
Organisms that appear more similar are always more closely related.
Phylogenetic trees represent hypotheses about evolutionary relationships.
Branch points on a phylogenetic tree represent the divergence of two or more lineages from a common ancestor.
Genetic drift, a significant force in evolution, exerts varying effects depending on population size. Which of the following accurately describes the impact of genetic drift on small populations?
It has minimal impact as allele frequencies remain relatively stable.
It increases genetic diversity by introducing new alleles through random mutations.
It leads to a significant decrease in genetic diversity and can fix alleles, even deleterious ones.
It promotes adaptive evolution by selectively favoring beneficial alleles.
The Hardy-Weinberg principle describes the conditions under which allele and genotype frequencies in a population remain constant. Which of the following is NOT an assumption of the Hardy-Weinberg principle?
No mutations occur.
No gene flow occurs between populations.
Natural selection does not act on the population.
Non-random mating, such as assortative mating, occurs.
