Answer by Diane Eager Many theories have been put forward as to why zebras have stripes, including camouflage to elude both large and small predators, i.e. lions and horseflies. The problem with that explanation is that lions and flies both attack other creatures, (including people) but none of those show any signs of developing stripes. […]
BACTERIA: Isn’t the observed increase in resistance to antibiotics proof that bacteria are evolving?
Antibiotic resistance is regularly presented as proof of evolution in school courses and to the general public, and hardly a week goes by without some health experts warning us about “superbugs” evolving resistance to antibiotics. Scientists have also carried out experiments where they expose bacteria to gradually increasing amounts of antibiotics and found bacteria that […]
Answer by Diane Eager and John Mackay High School text books back in the 1990’s introduced a diagram showing the evolutionary history of whales that is still in the minds of most people. A dog like creature (Mesoynchid) somehow evolved into a semi-aquatic walking creature called Ambulocetus which further evolved tail flukes like a whale, […]
Answer by Diane Eager and John Mackay Here is a typical description of horse evolution from the Natural History Museum in Oxford UK (2016): “The evolutionary origins of the modern horse can be trace back to the beginning of the Eocene period, around 55 million years ago. At that time the first horse, Hyracotherium, was […]
ORIGIN OF LIFE: Since all chemicals needed for life occur by natural processes do we need a creator to make life?
The original question was: My biology lecturer has stated that since the early days of Millers amino acid experiment we have discovered natural processes on earth and in stars can make amino acids for proteins, sugars for DNA, complex carbohydrates and on and on, so no god is needed to make life because given long […]
Answer by Diane Eager Homo floresiensis is the scientific name given to bones found in a cave on the Indonesian island of Flores initially in 2003. Since then more bones have been found and the creature has been nicknamed “The Hobbit” due to its small stature, about 3 feet tall, and its small head. As […]
HOMOLOGOUS STRUCTURES? Vertebrate limbs have the same bone structure. Is this evidence for evolution?
The Original question was: School textbooks and lesson plans use homologous structures, such as the bones in vertebrate limbs, as evidence for evolution. How can we refute these claims? Answer by Diane Eager Homologous structures are organs and body parts that have the same internal organisation. For example, all vertebrates have limbs with a common […]
HUMAN TAILS? I have read that babies can be born with true tails. Are these leftovers from our evolutionary ancestors?
The original question was: I read an article that claimed there are “true tails” as opposed to “false tails” and there are 20 to 30 cases of “true tails” in humans. Is this correct, or are they just “more advanced” false tails? Reference: http://io9.gizmodo.com/5967742/the-science-of-human-tails Answer by Diane Eager. The article referenced in the link above […]
GIRAFFES: If natural selection favoured long necked giraffes why are females shorter than males? How do juveniles survive?
The Original question was: Giraffe evolution – If giraffes have long necks because natural selection favoured that phenotype in an environment with high foliage, why are the adult females one metre shorter than males? Surely they would all be the same height if the evolution story were true? It is also a bit of a […]
Following our publication of a question and answer on Lenski’s E. coli experiment we received a request for further information. We suggest you first read the original question: Bacteria Evolution? Lenski’s E coli experiment: Has it shown bacteria can evolve new information? Answer here by Diane Eager Follow up questions were: Why do you use […]