Four of the five answers below are consistent with Darwin's theory of natural selection. Variation in individuals is not inheritable. Speed of evolutionary processes such as mutation. Choose the best answer from the four options given. Darwin suffered from a number of illnesses.
What is the relationship between the wing of a bird and the wing of a bat? If the theory of natural selection is the survival of the fitness, and the fittest are identified as those who survive, why isn't it regarded as a tautology a statement that is true only because of the meaning of the terms? A bird issues a warning cry that puts it at greater risk of being noticed by a predator. She looks at a representative mammal species to see if it has a forked tongue. If the frequency of a recessive gene in a population under genetic equilibrium is 40 percent, in the next generation the frequency of that gene would be a. Percentage score will be displayed along with right answers. Darwin was concerned about the reaction of others to the implications of his theory. It is not important from an evolutionary standpoint.
Copyright © 1995-2010, Pearson Education, Inc. The same trait evolves independently in two different taxa e. The Department of Biological Sciences's. A lion who has a harem of many lionesses and one cub. Over time, due to exposure to this chemical, the members of the population lose their sight. A branch shifts along the X axis. Over time, due to lack of use, they lost the ability to see.
Which of the following is the age of tools of stones and bones? What type of selection has acted here? Sexual selection occurs during sex. A natural population of plants has greatly varying flower height. Organisms that look alike may be very distantly related to one another. Which one is the closest to modern man? Neanderthal is known to have practiced rituals because of the following evidence. Darwin wanted to share his theory as quickly as possible once he returned from his voyage on the Beagle. Who was the first civilized man? There are patterns in the fossil record that suggest other species have diverged from a single ancestor species.
One person is older than another. Which of the following is not an example of a macroevolutionary process? Sexual selection occurs within demes, natural selection does not. Homer inherited baldness from his father's side of the family. A branch shifts along the Y axis. Close to the factory, the ground and air are several degrees warmer due to hot air exhausted from the building. The first mammal species and all its descendants.
It is designed to help you learn the material. What type of speciation is this? If all organisms were the same, the entire population would be vulnerable to particular pathogens, like viruses. Genetic drift does not require the presence of variation. Which of the Fossil men had cranial capacity near to modern man? When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking 'Get score'. Inherited differences between individual organisms comprising the population. Extinctions are due to catastrophic events.
What does this imply about natural selection? Extinctions never occur--there are unexplored parts of the globe where organisms that appear to have gone extinct may still live. A response will appear in the window below the question to let you know if you are correct. A lion who cares for his cubs, two of who live to adulthood. One lion species splits to form two lion species over geological time. Which of the following is an example of an ancestral homology? Male peacocks evolve tail feathers that would appear to make them more rather than less vulnerable to predators. Which one of the following was the first to stand bipedal movement? Large beak size occurred as a result of mutation in each member of the population.
Which of the following are the most distantly related to one another? There are common stages in the early embryological development of organisms representing several distinct vertebrate groups. Natural selection is nevertheless a directed process- the likelihood one variant will be favored in a given environment over another is predictable, even if the origin is not. The variation natural selection operates on is due to random mutations. She looks among snake fossils for evidence that being forked is a characteristic of the ancestor of this group, but determines no such fossils exist. It is regarded as a tautology - the question is based on a false assumption. . Almost all modern reptiles, birds and mammals have forelimbs, a trait they also share with contemporary amphibians.
Lamarck's contribution to the theory of evolution was the concept of a. The first bird species and all its descendants. When a population goes through a bottleneck, a. The last American eagle dies off, leading to the extinction of the species. As such, large beaked birds increased in frequency relative to small beaked birds. Directions: Answer the following multiple choice questions by choosing the letter of the response that represents the best answer to the question. One person has a scar, but her friend does not.
They are analogous because while each carries out the same function flight , this trait has arisen independently as a result of convergence i. A biologist is trying to infer how five closely related species of snakes are related to one another. The ancestors of this bird species encountered a tree with larger than average sized seeds. Apu is a tongue roller, but his brother Sanjay is not. How might an evolutionary biologist explain why a species of species of salamander becomes blind after colonizing a cave? Anatomical structures, such as forelimbs, in different groups appear to be modified versions of structures that might have been present in a common ancestor.