Free Evolution MCQs with Answers

• A. Pigeons
• B. Ravens
• C. Finches
• D. Parrots

Explanation: On the Galapagos Islands, among the birds, the finches (commonly known as Darwin's finches) caught much attention from Charles Darwin in…

• A. Elephant tusks and human incisors
• B. Teleost erythrocyte and mammalian erythrocyte
• C. Insect wing and bat wing
• D. Mole forelimb and bird wing
• E. None of the above

Explanation: Option A: Elephant tusks and human incisors are homologous structures, meaning they have the same evolutionary origin but different…

• A. Species
• B. Population
• C. Survival
• D. Environment

Explanation: The correct answer is Environment. The environment exerts selection pressures that influence the success of certain variations over…

• A. No, it will not affect the Hardy-Weinberg equilibrium
• B. Yes, it will affect the Hardy-Weinberg equilibrium
• C. It will help to balance the equilibrium
• D. The Hardy-Weinberg equilibrium doesn't apply here

Explanation: The Hardy-Weinberg equilibrium assumes several conditions, one of which is random mating among individuals.

• A. Giraffe
• B. Galapagos finches
• C. Snake
• D. All of these

Explanation: Galapagos is an island where Darwin observed almost 13 types of finchis with distinct traits.

• A. Frequency of the dominant allele
• B. Frequency of the recessive allele
• C. Frequency of the homozygous recessive genotype
• D. Number of both alleles

Explanation: In Hardy-Weinberg equilibrium, the equation p² + 2pq + q² = 1 is used to describe the distribution of genotypes in a population.

• A. Change of allele and gene frequency in a population
• B. Stability of allele and gene quantity in a population
• C. Change of allele and gene number in a population
• D. Stability of allele and gene frequency in a population

Explanation: Genetic equilibrium refers to a condition where the allele and gene frequencies in a population remain constant over time, indicating no…

• A. Metamorphic rocks
• B. Soil
• C. Volcanic mountains
• D. Sedimentary rocks

Explanation: Option D: Sedimentary rocks are the most common source of fossils because they form through the deposition of materials like sand, mud…

• A. Special creation
• B. Natural selection
• C. Catastrophism
• D. Inheritance of acquired characters

Explanation: Carolus Linnaeus, regarded as the father of taxonomy, held the belief of special creation.

• A. Community
• B. Family
• C. Race
• D. Population

Explanation: A population refers to a group of individuals of the same species that live in a specific geographic area and can interbreed.

• A. Inbreeding
• B. Outbreeding
• C. Breeding
• D. Assortative Mating

Explanation: Outbreeding is the process of mating between unrelated or distantly related individuals, which helps increase genetic variability and…

• A. Hardy-Weinberg
• B. Malthus
• C. Alfred Wallace
• D. Lyell

Explanation: The correct answer is Alfred Wallace. Wallace independently formulated a theory of natural selection similar to Darwin's, resulting in a…

• A. Teeth
• B. Nails
• C. Body hair
• D. Coccyx

Explanation: The correct answer is d) Coccyx. The coccyx is a vestigial structure in humans, whereas teeth, nails, and body hair are not vestigial and…

• A. Polymorphism
• B. Gene linkage
• C. Specialisation
• D. Replication

Explanation: The correct answer is Specialisation. Specialisation refers to the adaptation of organisms or species to perform specific roles or…

• A. Eyes-cleaning
• B. Brain-thinking
• C. Feet-locomotion
• D. Bones-supporting

Explanation: The nictitating membrane is a transparent or translucent third eyelid present in some animals that can be drawn across the eye for…

• A. Adaptations
• B. Polymorphism
• C. Niches
• D. Specialization

Explanation: Option A: An adaptation is any heritable trait that helps an organism, such as a plant or animal, survive and reproduce in its…

• A. Mendel
• B. Wallace
• C. Lamarck
• D. Lynn Margulis

Explanation: Wallace knew Darwin was working on similar research. In 1858, he sent Darwin a letter outlining his ideas about evolution.

• A. The organism's ability to compete effectively for resources within its species
• B. The organism's success in attracting mates
• C. The organism's overall health and well-being
• D. The ability of an organism to pass its genes to the next generation

Explanation: In evolutionary biology, 'fitness' is defined by an organism's ability to survive and reproduce, thereby ensuring its genetic traits are…

• A. Gene
• B. Individual
• C. Group
• D. All of these

Explanation: Natural selection operates at the individual level because individuals possess traits that can either enhance or hinder their survival and…

• A. Iron
• B. Zircon
• C. Diamond
• D. Cadmium

Explanation: Zircon is the correct answer because it is the oldest known mineral, dating back to about 4.4 billion years.